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Research & Teaching
Though
I started my Ph.D. in particle physics, I got interested in the newly emerging
area of astroparticle physics. I have explored
phase transitions in the early universe, inflation in supergravity
models and baryogenesis in various papers written
with many co-workers. Some years ago, I got interested in the area of
gravitational lensing and how it could be used to provide some constraints
on cosmological parameters. I have also been, together with some colleagues
exploring the area of a viable coasting cosmology as also Cosmic Microwave
Background Radiation. Exploring the various models of dark energy in the
universe is another area of interest. Currently, we are using various
statistical techniques and observational data to constrain cosmological
parameters and dark energy models. Apart from cosmology and particle
physics, I have also dabbled in traffic simulation, biological networks and
modelling antibiotic resistance using tools like
Monte Carlo simulations and artificial neural networks.
Over
the years I have taught many courses at the undergraduate &
postgraduate level. These include Mathematical Physics, Modern Physics,
Electrodynamics, Radiation Theory, Astrophysics, Computational Physics,
Numerical Analysis & C-Programming, and Nuclear Physics Laboratory etc.
I have authored Manuals on Numerical Analysis
& C programming, Nuclear Physics Laboratory
, Data Analysis and Markov Chain Monte Carlo
etc. for use by students. I also have some lecture Notes on Special
Relativity, Astronomy &
Astrophysics Part I and Astronomy
& Astrophysics Part II , Electromagnetic
Theory & Electrodynamics , Quantum Computation
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Other
Interests
I
have been writing in many
newspapers and magazines on a variety of issues. I have also been a
regular contributor to several magazines including Down To Earth,
Chatterbox, The Book Review etc.
I
have written more than a dozen books
for young adults which have been published by
Scholastic Inc. Amongst my other books, From
Bugs to Blackholes has been published by Penguin Books. The Story of
Technology and The Story of Science
have been published by Ulman. Have also
translated several books from English to Hindi for Pratham.
I have
contributed the chapter on Science
& Mathematics Teaching for the Routledge Handbook of Education in India . I
have also contributed to two edited volumes- The University Unthought: Notes for a Future, and The
Idea of a University.
I
have been associated with several Voluntary Agencies in various capacities.
These include CENDIT, Dr. Arvind N. Das
Foundation, Sampradayikta
Virodhi Andolan &
Om Charitable Trust.
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