About
I am postdoctoral fellow in theoretical physics at Nazarbayev University, Astana with an interest in contributing to a deeper understanding of gravity, its classical and quantum aspects. Earlier I worked at University of Chinese Academy of Sciences (UCAS), Beijing as a (visiting) postdoc fellow during COVID-19 travel restriction. I also had a concurrent adjunct teaching position at the Assam Science & Technology University in India around that time.
Earlier, I graduated with a PhD from the Department of Physics at Fudan University, Shanghai.
My Ph.D. thesis is titled “Singularity resolution in theories beyond General Relativity
and some astrophysical implications” and it is supervised
by Prof. Cosimo Bambi.
My Research
My broad area of interest is the classical and quantum aspects of gravity. My research has ranged from the physics of black holes and compact objects in General Relativity and modified gravity to cosmology. Specifically, I am interested in the shortcomings of GR and how modifications to the theory aimed at overcoming the issues affect observations in both astrophysical and cosmological regimes.
At present, I am working on cosmological models with a running Newton’s constant (and variable dark energy)
which can induce a period of accelerated expansion in the early or late universe or a bounce
(see e.g. 2405.02636 in the context of asymptotic safety
and 2411.05965 for a simple parametrization to alleviate the Sigma8 tension).
Other Interests
When I am not procastinating with some physics problem, I like to go for a run, hike in the mountains, read books or watch cricket matches. You can follow me on Strava.
Contact
Email me: hrishikeshchakrabarty[at]gmail.com