{"id":692,"date":"2021-08-31T23:28:36","date_gmt":"2021-08-31T16:28:36","guid":{"rendered":"https:\/\/na.mahidol.ac.th\/nas2020\/?page_id=692"},"modified":"2026-01-21T09:55:40","modified_gmt":"2026-01-21T02:55:40","slug":"personal-page-of-nandan-roy","status":"publish","type":"page","link":"https:\/\/na.mahidol.ac.th\/nas2020\/personal-page-of-nandan-roy\/","title":{"rendered":"Dr. Nandan Roy"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-457 aligncenter\" src=\"https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-300x300.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-300x300.png 300w, https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-150x150.png 150w, https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-768x768.png 768w, https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-1024x1024.png 1024w, https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04-1200x1200.png 1200w, https:\/\/na.mahidol.ac.th\/nas2020\/wp-content\/uploads\/2021\/08\/04.png 1938w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<div class=\"views-field views-field-field-staffqual\">\n<div class=\"field-content\">\n<hr \/>\n<p>B.Sc. First Class Hons. in Physics, Vidyasagar University (Midnapore College) | M.Sc. First Class in Physics, Vidyasagar University | Ph.D. in Physical Sciences, IISER Kolkata<\/p>\n<\/div>\n<\/div>\n<div class=\"views-field views-field-field-staffpos\">\n<div class=\"field-content\">Cosmology | Gravity<\/div>\n<div><\/div>\n<\/div>\n<div class=\"views-field views-field-field-staffemail\">\n<div class=\"field-content\"><span id=\"50ea45feca0fe2e51e93e5331a13365497a838e6\">Email: <span style=\"color: #339966;\">nandan.roy@mahidol.ac.th<\/span><\/span><\/div>\n<div class=\"field-content\"><span id=\"50ea45feca0fe2e51e93e5331a13365497a838e6\" style=\"color: #339966;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 nandanroy84@gmail.com<\/span><\/div>\n<div><\/div>\n<\/div>\n<div><a href=\"https:\/\/orcid.org\/0000-0001-7197-453X\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" src=\"https:\/\/orcid.org\/sites\/default\/files\/images\/orcid_16x16.png\" alt=\"ORCID iD icon\" \/>https:\/\/orcid.org\/0000-0001-7197-453X<\/a><\/div>\n<div>\n<hr \/>\n<\/div>\n<h2><strong>Personal Webpage<\/strong><a href=\"https:\/\/sites.google.com\/site\/nandaniiser\/HOME\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/bit.ly\/37KhqYI\" width=\"50\" height=\"50\" \/><\/a><\/h2>\n<hr \/>\n<h2 id=\"education\">\u00a0<strong>Education<\/strong><\/h2>\n<ul>\n<li><strong>2010 &#8211; 2015, Ph.D.\u00a0<\/strong>Indian Institute of Science Education and Research Kolkata,Supervisor: Prof. Narayan Banerjee<\/li>\n<li><strong>2006 &#8211; 2008, M.Sc (Physics)<\/strong>Vidyasagar University<\/li>\n<li><strong>2002 &#8211; 2006, B.Sc (Physics)<\/strong>Midnapore College, Vidyasagar University<\/li>\n<\/ul>\n<h2 id=\"post-doctoral-experiences\"><strong>Post Doctoral Experiences <\/strong><\/h2>\n<ul>\n<li><strong>October 2016 &#8211; July 2018<\/strong>The Department of Physical Sciences, Campus Leon, University of Guanajuato, Mexico<\/li>\n<li><strong>April 2015 &#8211; September 2016<\/strong>Harish-Chandra Research Institute, Allahabad, India<\/li>\n<\/ul>\n<h2><strong>Research Interest<\/strong><\/h2>\n<p>The general topics of my research interest are cosmology, general relativity, and dynamical systems analysis. At present, I am working to find out the true nature of dark energy. Recently our universe has entered into an accelerated expansion phase and the reason behind it is unknown. The component of the universe which drives this accelerated expansion of the universe is generally called dark energy and almost 70% of the universe is dominated by this mysterious component. So personally to me, investigations of the true nature of dark energy are very important.<\/p>\n<h2><strong>List of topics<\/strong><\/h2>\n<ul>\n<li>Study of different dark energy models using cosmological data and dynamical systems analysis.<\/li>\n<li>Application of dynamical systems analysis to general relativity and cosmology.<\/li>\n<li>Application of dynamical systems analysis to general relativity and cosmology.<\/li>\n<li>Study of the critical phenomenon in general relativity.<\/li>\n<\/ul>\n<p><strong>Postdoctoral Supervision:<\/strong><br \/>\nName: Dr. Masroor c. Pookkillath<br \/>\nPhD: Yukawa Institute for Theoretical Physics, Kyoto University, Japan<\/p>\n<p><strong>\u00a0PhD thesis supervision:<\/strong><br \/>\n1. Miss. Phusuda Thanankullapong<\/p>\n<p>2.\u00a0Phichayoot Baisri (DPST Scholar)<\/p>\n<p>3. Mr. Prasanta Sahoo (Co-supervising) (Thesis Submitted)<\/p>\n<p><strong>MS thesis supervision:<\/strong><\/p>\n<p>Supervised jointly with Dr. Luis Urena Lopez at Universidad de Guanajuato.<br \/>\nName: Mr. Jose Alberto Gonzalez Bernal<br \/>\nThesis Title: Alternative models of dark energy<\/p>\n<div id=\"mceu_32\" class=\"mce-toolbar-grp mce-container mce-panel mce-stack-layout-item\" tabindex=\"-1\" role=\"group\"><\/div>\n<div id=\"mceu_37\" class=\"mce-edit-area mce-container mce-panel mce-stack-layout-item\" tabindex=\"-1\" role=\"group\"><\/div>\n<h2 id=\"education\"><strong>Journal Referee<\/strong><\/h2>\n<p>Modern Physics Letter A<\/p>\n<p>Annals of Physics<\/p>\n<p>Physics of the Dark Universe<\/p>\n<h2><strong>Arxiv preprint<\/strong><\/h2>\n<ul>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1662512\">Second Order Perturbative Effects on the Acoustic Geometry,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1903967\">Shivani Singh<\/a>, Sankhasubhra Nag, Tapas K. Das, e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1803.05312\">1803.05312\u00a0<\/a>[gr-qc]<\/li>\n<\/ul>\n<h2><strong>List of Publications<\/strong><\/h2>\n<p>See my publications in <a href=\"https:\/\/arxiv.org\/search\/?query=nandan+roy&amp;searchtype=all&amp;source=header\">Arxiv<\/a>, <a href=\"http:\/\/inspirehep.net\/search?p=exactauthor%3ANandan.Roy.1&amp;sf=earliestdate\">Inspire Hep<\/a>, <a href=\"https:\/\/scholar.google.co.in\/citations?user=Ojs2OboAAAAJ&amp;hl=en\">Google Scholar<\/a>.<\/p>\n<ol>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/2016678\">Quintessence or Phantom: Study of scalar field dark energy models through a general parametrization of the Hubble parameter\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/910146\">Mahidol U.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1007893\">Sangita Goswami<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/903329\">Visva Bharati U.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1034175\">Sudipta Das<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/903329\">Visva Bharati U.<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/2201.09306\">2201.09306\u00a0<\/a>[astro-ph.CO].\u00a0 Published in:\u00a0\u00a0<strong>\u00a0<em>Physics of the Dark Universe, Volume 36,\u00a0June 2022, 101037<\/em><\/strong><\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1863630\">Tracker phantom field and a cosmological constant: Dynamics of a composite dark energy model\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1275274\">Francisco X. Linares Cede\u00f1o<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/985188\">L. Arturo Ure\u00f1a-L\u00f3pez ,<\/a>e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/2105.07103\">2105.07103\u00a0<\/a>[astro-ph.CO] DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.104.123502\">10.1103\/PhysRevD.104.123502\u00a0<\/a>(publication) Published in:\u00a0<strong>Phys.Rev.D 104 (2021) 12, 123502<\/strong><\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1807743\">Generalized tracker quintessence models for dark energy\u00a0<\/a><\/b>L. Arturo Ure\u00f1a-L\u00f3pez (<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/909436\">Naresuan U.<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/2007.08873\">2007.08873\u00a0<\/a>[astro-ph.CO] DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.102.063510\">10.1103\/PhysRevD.102.063510\u00a0<\/a>Published in:\u00a0<strong>Phys.Rev.D<\/strong> <strong>102 (2020) 6, 063510<\/strong><\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1723885\">Dynamical System Analysis for Steep Potentials\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1034175\">Sudipta Das<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1968820\">Manisha Banerjee<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy,\u00a0<\/a>e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1903.02288\">1903.02288\u00a0<\/a>[gr-qc] DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1088\/1475-7516\/2019\/08\/024\">10.1088\/1475-7516\/2019\/08\/024\u00a0<\/a>Published in:\u00a0<strong>JCAP 08 (2019), 024<\/strong>.<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1702646\">Arbitrariness of potentials in interacting quintessence models,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/909436\">Naresuan U.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1043009\">Kazuharu Bamba<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/902812\">Fukushima U.<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1811.03234\">1811.03234\u00a0<\/a>[astro-ph.CO], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.99.123520\">10.1103\/PhysRevD.99.123520,\u00a0<\/a>Published in:<strong>\u00a0Phys.Rev.D 99 (2019) 12, 123520<\/strong><\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1664348\">New general parametrization of quintessence fields and its observational constraints,<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1069592\">Alma X. Gonzalez-Morales<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>), L. Arturo Urena-Lopez (<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1803.09204\">1803.09204\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.98.063530\">10.1103\/PhysRevD.98.063530,\u00a0<\/a>Published in:<strong>\u00a0Phys.Rev.D 98 (2018) 6, 063530<\/strong><\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1631153\">Dynamical systems analysis of phantom dark energy models,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>), Nivedita Bhadra (<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1710.05968\">1710.05968\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1088\/1475-7516\/2018\/06\/002\">10.1088\/1475-7516\/2018\/06\/002,\u00a0<\/a>Published in:\u00a0JCAP 06 (2018), 002<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1620047\">Extended Phase Space Analysis of Interacting Dark Energy Models in Loop Quantum Cosmology,\u00a0<\/a><\/b>Hmar Zonunmawia (<a href=\"https:\/\/inspirehep.net\/institutions\/904544\">Northeastern Hill U., Shillong<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1652740\">Wompherdeiki Khyllep<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911034\">M.N. College<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/905493\">Guanajuato U.<\/a>\u00a0and\u00a0<a href=\"https:\/\/inspirehep.net\/institutions\/906372\">Harish-Chandra Res. Inst.<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1053363\">Jibitesh Dutta<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/904544\">Northeastern Hill U., Shillong<\/a>\u00a0and\u00a0<a href=\"https:\/\/inspirehep.net\/institutions\/905919\">IUCAA, Pune<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1077794\">Nicola Tamanini<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/1087875\">IPhT, Saclay<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1708.07716\">1708.07716\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.96.083527\">10.1103\/PhysRevD.96.083527,\u00a0<\/a>Published in:\u00a0Phys.Rev.D 96 (2017) 8, 083527<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1512583\">Generalized Brans-Dicke Theory: A Dynamical Systems Analysis,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>,\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1034174\">Narayan Banerjee,\u00a0<\/a>e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1702.02169\">1702.02169\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.95.064048\">10.1103\/PhysRevD.95.064048,\u00a0<\/a>Published in:\u00a0Phys.Rev.D 95 (2017) 6, 064048<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1406546\">Dynamical Systems Analysis of Various Dark Energy Models ,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>),e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1511.07978\">1511.07978\u00a0<\/a>[gr-qc]<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1385680\">Stability analysis of a holographic dark energy model,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1034174\">Narayan Banerjee<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>), DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1007\/s10714-015-1933-1\">10.1007\/s10714-015-1933-1,\u00a0<\/a>Published in:\u00a0Gen.Rel.Grav. 47 (2015) 8, 92<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1326111\">Dynamical systems study of Chameleon scalar field,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1034174\">Narayan Banerjee<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1411.1164\">1411.1164\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.aop.2015.03.013\">10.1016\/j.aop.2015.03.013,\u00a0<\/a>Published in:\u00a0Annals Phys. 356 (2015), 452-466<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1282890\">Quintessence Scalar Field: A Dynamical Systems Study,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1034174\">Narayan Banerjee<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1402.6821\">1402.6821\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1140\/epjp\/i2014-14162-7\">10.1140\/epjp\/i2014-14162-7,\u00a0<\/a>Published in:\u00a0Eur.Phys.J.Plus 129 (2014), 162<\/li>\n<li><b><a href=\"https:\/\/inspirehep.net\/literature\/1268614\">Tracking quintessence: a dynamical systems study,\u00a0<\/a><\/b><a href=\"https:\/\/inspirehep.net\/authors\/1642365\">Nandan Roy<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>),\u00a0<a href=\"https:\/\/inspirehep.net\/authors\/1034174\">Narayan Banerjee<\/a>\u00a0(<a href=\"https:\/\/inspirehep.net\/institutions\/911554\">IISER, Kolkata<\/a>), e-Print:\u00a0<a href=\"https:\/\/arxiv.org\/abs\/1312.2670\">1312.2670\u00a0<\/a>[gr-qc], DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1007\/s10714-013-1651-5\">10.1007\/s10714-013-1651-5,\u00a0<\/a>Published in:\u00a0Gen.Rel.Grav. 46 (2014), 1651<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h2 class=\"CjVfdc\">Teaching Experience<\/h2>\n<p id=\"h.p_KB0yGr6QXJTl\" class=\"CDt4Ke zfr3Q\">Following is the list of courses that I have taught throughout my academic career.<\/p>\n<ul class=\"n8H08c UVNKR\">\n<li id=\"h.p_NrU6dN2ofipe\" class=\"TYR86d zfr3Q\">Currently teaching Waves and Fluid dynamics, and Equilibrium Statistical Mechanics and Kinetic Theory at The Institute for Fundamental Study, Naresuan University, (Level:PG).<\/li>\n<li id=\"h.p_0LIX-e_IfuiM\" class=\"TYR86d zfr3Q\">Waves and Fluid dynamics, The Institute for Fundamental Study, Naresuan University in the spring semester 2019 (Level: PG).<\/li>\n<li id=\"h.p_34-bOVPWfxyy\" class=\"TYR86d zfr3Q\">Introduction to cosmology, The Institute for Fundamental Study, Naresuan University in the fall semester 2018 (Level: PG).<\/li>\n<li id=\"h.p_LXMbiQfKf0MY\" class=\"TYR86d zfr3Q\">Equilibrium Statistical Mechanics and Kinetic Theory, The Institute for Fundamental Study, Naresuan University in the fall semester 2018 (Level: PG)<\/li>\n<li id=\"h.p_xEXvXz2pf4Bc\" class=\"TYR86d zfr3Q\">Cosmology, Universidad De Guanajuato Campus Leon, Mexico in the spring semester 2017(Level: UG).<\/li>\n<li id=\"h.p_VFYw1YLaf6Um\" class=\"TYR86d zfr3Q\">Teaching assistant at IISER Kolkata: Physics I, titled Mechanics, Course instructor: Prof. Amitava Dutta (Level: UG).<\/li>\n<li id=\"h.p_FT0G9nqmf8AB\" class=\"TYR86d zfr3Q\">Teaching assistant at IISER Kolkata: Physics II, titled Electromagnetism, Course instructor: Dr. Dibyendu Nandi (Level: UG).<\/li>\n<li id=\"h.p_ZiLb7_k5f-KP\" class=\"TYR86d zfr3Q\">Part-time lecturer, Midnapore college and Raja N L Khan Women\u2019s college,<\/li>\n<li id=\"h.p_km21ObfWf_sv\" class=\"TYR86d zfr3Q\">Midnapore, West Bengal, India: Statistical mechanics, mathematical physics, electromagnetism, and physics practical classes to the undergraduate students (Level: UG).<\/li>\n<\/ul>\n<div id=\"h.p_ECr8u1tSXJTn\" class=\"CobnVe aP9Z7e\"><\/div>\n<h2 id=\"h.p_ECr8u1tSXJTn\" class=\"CDt4Ke zfr3Q JYVBee\"><\/h2>\n<h2 class=\"CjVfdc\">Supervision of project students and M.Sc thesis<\/h2>\n<ul class=\"n8H08c UVNKR\">\n<li id=\"h.p_RgCP-9rnXJTo\" class=\"TYR86d zfr3Q\">Supervised one MS thesis student jointly with Dr. Luis Urena Lopez at Universidad de Guanajuato.<\/li>\n<\/ul>\n<p id=\"h.p_4nFC1LwjgI83\" class=\"CDt4Ke zfr3Q QcmuFb\">Name: Mr. Jose Alberto Gonzalez Bernal<\/p>\n<p id=\"h.p_TQ7VW2M1gI83\" class=\"CDt4Ke zfr3Q QcmuFb\">Thesis Title: Alternative models of dark energy<\/p>\n<ul class=\"n8H08c UVNKR\">\n<li id=\"h.p_LBBZcCi6gOZx\" class=\"TYR86d zfr3Q\">Following students have worked jointly with me and Dr. Tapas Das, Associate Professor, under Visiting Student Research Programme (VSRP) in Harish Chandra Research Institute, Allahabad:<\/li>\n<\/ul>\n<p id=\"h.p_48yptn7cgI85\" class=\"CDt4Ke zfr3Q QcmuFb\">Name:\u00a0 MS Shivani Singh from IIT Hyderabad.<\/p>\n<p id=\"h.p_rk43SlPUgI86\" class=\"CDt4Ke zfr3Q QcmuFb\">Name:\u00a0 Mr.Arindam Chakrabarti from North Bengal University.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"hJDwNd-AhqUyc-OiUrBf purZT-AhqUyc-II5mzb pSzOP-AhqUyc-qWD73c JNdkSc\">\n<div class=\"JNdkSc-SmKAyb\">\n<div class=\"\">\n<div class=\"oKdM2c Kzv0Me\">\n<div id=\"h.p_AkgfdVgKSBp7\" class=\"hJDwNd-AhqUyc-OiUrBf jXK9ad D2fZ2 OjCsFc wHaque GNzUNc\">\n<div class=\"jXK9ad-SmKAyb\">\n<div class=\"tyJCtd mGzaTb baZpAe lkHyyc\">\n<h2 id=\"h.p_vSqIXZq6SBqJ\" class=\"CDt4Ke zfr3Q JYVBee\">Talk and Poster Presentation<\/h2>\n<ul>\n<li>Gave talk on &#8221; Study of Quintessence and Phantom scalar field models through a general parametrization of the Hubble parameter&#8221; at Cosmology from Home 2022 on\u00a04 July &#8211; 15 July.<\/li>\n<li><span dir=\"ltr\" role=\"presentation\">Gave invited seminar on \u201cCurrent tensions in cosmology&#8221; at 2022 NAS-IF Summer School\u00a0<\/span><span dir=\"ltr\" role=\"presentation\">for Young Physicists on Cosmology, Quantum Information, and Quantum Field Theory,<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Thailand.<\/span><\/li>\n<li><span dir=\"ltr\" role=\"presentation\">Gave invited seminar on \u201cDark Energy, the biggest mystery in the universe&#8221; at Midnapore\u00a0<\/span><span dir=\"ltr\" role=\"presentation\">College, India, on 11th May.<\/span><\/li>\n<li>\u00a0<span dir=\"ltr\" role=\"presentation\">Gave a talk on &#8220;Tracking Scalar Field Models and Hubble Tension&#8221; at the Asia-Pacific School<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">and Workshop on Gravitation and Cosmology 2022 from Mar 19-22, 2022<\/span><\/li>\n<li><span dir=\"ltr\" role=\"presentation\">Gave invited seminar on \u201cQuintessence or Phantom: Study of scalar field dark energy models\u00a0<\/span><span dir=\"ltr\" role=\"presentation\">through a general&#8221; at &#8220;Gravity Theories and Signals from Observations&#8221;, Mexico on 4th March 2022.<\/span><\/li>\n<li><span dir=\"ltr\" role=\"presentation\">Gave seminar on \u201cTracker dark energy models and the Hubble Tension&#8221; on 29th November<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">2021 in Khaothong Seminar Series at Mahidol University Nakhownswan Campus.<\/span><\/li>\n<li><span dir=\"ltr\" role=\"presentation\">Gave seminar on \u201c Introduction to Dark Energy Dynamics &#8221; on 9 August 2021 in Khaothong\u00a0<\/span><span dir=\"ltr\" role=\"presentation\">Seminar Series at Mahidol University Nakhownswan Campus<\/span><\/li>\n<li>Taught &#8221; Introduction to dark energy &#8221; from Friday 30th &#8211; Saturday 31st July 2021, 2021 NAS-IF Joint School on Theoretical Physics (Online)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"mYVXT\">\n<div class=\"LS81yb VICjCf\">\n<div class=\"hJDwNd-AhqUyc-uQSCkd purZT-AhqUyc-II5mzb pSzOP-AhqUyc-qWD73c JNdkSc\">\n<div class=\"JNdkSc-SmKAyb\">\n<div class=\"\">\n<div class=\"oKdM2c Kzv0Me\">\n<div id=\"h.p_6TmP1mHmSHMV\" class=\"hJDwNd-AhqUyc-uQSCkd jXK9ad D2fZ2 OjCsFc wHaque GNzUNc\">\n<div class=\"jXK9ad-SmKAyb\">\n<div class=\"tyJCtd mGzaTb baZpAe\">\n<ul class=\"n8H08c UVNKR\">\n<li style=\"list-style-type: none;\">\n<ul class=\"n8H08c UVNKR\">\n<li>Gave flash talk on &#8220;Tracker Phantom Dark Energy&#8221; in Cosmology from Home 2021, 5 July 2021 &#8211; 16 July 2021.<\/li>\n<li>Gave invited webinar on &#8220; Dark Energy and Dark Matter: The Dark Side of the Universe &#8221; on 25th November 2020 organized by Jhargram Raj College, West Bengal India<\/li>\n<li>Gave talk on &#8220; Generalized tracker quintessence models for dark energy &#8221; in Cosmology in Colombia from the 23-25th September 2020.<\/li>\n<li>Gave talk on &#8220; Generalized tracker quintessence models for dark energy &#8221; in Cosmology from Home 2020, 24 August 2020 &#8211; 04 September 2020.<\/li>\n<li id=\"h.p_XjtXMpLaSHMk\" class=\"TYR86d zfr3Q\">Gave talk on \u201cThe degeneracy of scalar field dark energy potentials&#8221; in The 30th Texas Symposium on Relativistic Astrophysics from 15 to 20 December 2019 at ICG, University of Portsmouth<\/li>\n<li id=\"h.p_wiyA1CBESWCg\" class=\"TYR86d zfr3Q\">Presented poster on \u201cThe degeneracy of scalar field dark energy potentials&#8221; in The 5th Tha-Pho School on Cosmology, from 22 &#8211; 29 July, 2019, Thailand<\/li>\n<li id=\"h.p_GElzplG3SYZj\" class=\"TYR86d zfr3Q\">Presented poster on the \u201cThe degeneracy of scalar field dark energy potentials&#8221; in Cosmo Gold IAP 2019 The golden age of cosmology from Planck to Euclid 24-28 June 2019, IAP, Paris<\/li>\n<li id=\"h.p_YQjdqMH-SbYZ\" class=\"TYR86d zfr3Q\">Invited talk on Introduction to Dark Energy in Department of Astrophysics, University of Guanajuato, Mexico.<\/li>\n<li id=\"h.p_wHBK1QiJSdSd\" class=\"TYR86d zfr3Q\">Gave a talk on The arbitrariness of potentials in quintessence models in XII TALLER DE LA DIVISI\u00c3\u015eN DE GRAVITACI\u00c3\u015eN Y F\u00c3\u014aSICA MATEM\u00c3\u0104TICA DE LA SMF, at University of Guadalajara, Mexico, November 2017.<\/li>\n<li id=\"h.p_NjIDB-k2SmM7\" class=\"TYR86d zfr3Q\">Presented a poster on a paper, Generalized Brans Dicke Theory: A Dynamical Systems Analysis in 28th IAGRG Meeting, Indian Institute of Technology Guwahati, India.<\/li>\n<li id=\"h.p_mvFnYQBMSogg\" class=\"TYR86d zfr3Q\">Presented a paper, Generalized Brans Dicke Theory: A Dynamical Systems Analysis in the XI School Of The Division Of Gravitation and Mathematical Physics, Mexico December,2016.<\/li>\n<li id=\"h.p_SoWU3GUuSq7W\" class=\"TYR86d zfr3Q\">Presented a paper, Stability of chameleon scalar field models in Great Lakes Cosmology and Galaxy Workshop, 19-22 June 2016, McMaster University, Hamilton, Canada.<\/li>\n<li id=\"h.p_WWtTpaSIStJV\" class=\"TYR86d zfr3Q\">Presented a paper, Stability of chameleon scalar field models in The 8th International Conference on Gravitation and Cosmology (ICGC), December, 2016.<\/li>\n<li id=\"h.p_klYRO949Svbd\" class=\"TYR86d zfr3Q\">Presented a paper, Stability of chameleon scalar field models in The 33rd Young Physicist Colloquium, August 2015.<\/li>\n<li id=\"h.p_SDeSb_p7SxR4\" class=\"TYR86d zfr3Q\">Presented a paper, Tracking quintessence: a dynamical systems study in TCGC(Eastern region) meeting. February 2015.<\/li>\n<li id=\"h.p_QXvYvBwzSzHg\" class=\"TYR86d zfr3Q\">Presented a paper, Stability of chameleon scalar field models in Departmental day of Department of Physical Sciences, IISER-Kolkata, 2014.<\/li>\n<li id=\"h.p_hExKjjvQS1O1\" class=\"TYR86d zfr3Q\">Presented a paper, Quintessence Scalar Field: A Dynamical Systems Study in DST-SERC School on Nonlinear Dynamics, Punjab University, Chandigarh, India,2014.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<div id=\"preview\" class=\"preview scrollEditor\"><\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>B.Sc. First Class Hons. in Physics, Vidyasagar University (Midnapore College) | M.Sc. First Class in Physics, Vidyasagar University | Ph.D. in Physical Sciences, IISER Kolkata Cosmology | Gravity Email: nandan.roy@mahidol.ac.th \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 nandanroy84@gmail.com https:\/\/orcid.org\/0000-0001-7197-453X Personal Webpage \u00a0Education 2010 &#8211; 2015, Ph.D.\u00a0Indian Institute of Science Education and Research Kolkata,Supervisor: Prof. Narayan &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/na.mahidol.ac.th\/nas2020\/personal-page-of-nandan-roy\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Dr. Nandan Roy&#8221;<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-692","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/pages\/692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/comments?post=692"}],"version-history":[{"count":6,"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/pages\/692\/revisions"}],"predecessor-version":[{"id":5089,"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/pages\/692\/revisions\/5089"}],"wp:attachment":[{"href":"https:\/\/na.mahidol.ac.th\/nas2020\/wp-json\/wp\/v2\/media?parent=692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}