Research

I am interested in mainly theoretical and computational works in Physics. My research interests are following:

Using tools of stability analysis in the study of dark energy models.

Dark energy detection using weak gravitational lensing.

Evolution of galaxies and effect of AGN on galaxies.

Mathematical modelling of biological systems and evolutionary dynamics.

Research Experience

I have done 4 summer projects and currently I am doing my MS thesis in Cosmology. The description of my MS thesis and research projects are given below.

MS Thesis (June2016 - Ongoing)

Topic: Dynamic System Analysis of Quintessence: Tracking an Thawing Potential.

Supervisor: Prof. Narayan Banerjee and Dr. Anandamohan Ghosh, Faculty at IISER Kolkata, India.

Abstract: This project focuses on the validity of tracking and thawing models and tries to determine which one is preferable using stability analysis. With a change of variables, the Friedmann equations and the continuity equation for the scalar field and matter can be converted into a set of non-linear differential equations which describes a dynamical system in equation of state and scalar field energy density. The stability analysis of this system should be able to predict the onset of acceleration and the future evolution of the universe. The objective is to determine which model fits into this system in a more physically consistent way.

Click here for the report

Summer 2015

Topic: To investigate the 3-body encounters consisting of a binary black hole and a field star using chain regularization algorithm.

Supervisor: Prof. Andreas Just, Faculty at ZAH (Center for Astronomy), ARI, University of Heidelberg, Germany.

Abstract: In the simulations of 3-body encounter of a binary supermassive black hole with stars from a globular cluster, the post-Newtonian terms are also taken into account for the binary black hole evolution, and, some new results are found which could not be obtained using the classical approach. The effects of binary mass ratios and pericenter distance of the binary on the hardening rate were investigated.

Click here for the project report

Summer 2014

Topic: A brief study on the properties of materials with negative refractive index.

Supervisor: Prof. Subir Ghosh, Faculty at Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata.

Abstract: Meta-materials are materials with negative refractive index. They behave differently than the other usual positive refractive index material. The reflection and refraction of waves at the interface of the two media is analogous to the behavior of electromagnetic waves near the black-hole horizon. So, meta-materials can be used to model and predict certain phenomena near the black-hole horizon.

Click here for the project report

Summer 2013

Topic: The experimental study of the dynamics of two coupled modified Wienbridge Oscillator and Chua Oscillator.

Supervisor: Dr. Md. Nurujjaman, Faculty at National Institute of Technology, Sikkim.

Abstract: This project is on experimental non-linear dynamics. It explores the behavior of the two oscillator circuits while coupled and the phenomenon of synchronization under various parameter conditions.

Click here for the project report

Summer 2012

Topic: A new method of solving linear differential equations and its application in harmonic oscillator problem.

Supervisor: Prof. Prasanta Panigrahi, Faculty at Indian Institute of Science Education and Research, Kolkata.

Abstract: A new method of solving linear ODE that uses the principles of eigenvalue problem. This method is simple and less time-consuming. Application of this method has been shown for a very well-known mathematical model: Harmonic Oscillator.