Projects
- JSPS-DST Project (2007 - 2009)
This is a project under Indo-Japanese Cooperative Science Programme. The
duration of the project is two years.
The key points of scientific results obtained during the first year are
as follows:
- The D-brane inflation was investigated. In this paper, it was
shown that the inflation is highly constrained by observational data
and requires heavy fined tuning. Ideas relating to the final solution
of the problem are given in this paper (Phys.Rev.D76: 103512, 2007).
- We investigated string curvature corrected gravity and applied it
to dark energy problem. It was shown that hte model provides a viable
solution. The stability of the solutions was also investigated. Future
prospects in this direction were highlighted (Elizalde et.al
Eur.Phys.J.C53:447-457, 2008)
- In collaboration with T. Shiromizu from Tokyo Technical Institute,
we have made a proposal to major correction to Newton's Law of
Gravitation. The experimental setup is seriously considered as present
in TIFR, Mumbai (Accepted for publication in Physical Review Letters).
- UGC Project on Observational Cosmology (2008 - 2011)
A UGC Major Research Project entitled "Accelerating Universe and its
observational signatures" has been awared to Dr. Anjan Ananda Sen
of our Centre. The duration of the project is three year from April
2008. Ms. N. Chandrachani Devi has joined in this project as a Project
Fellow.
The main objective of this project is two fold. Firstly it is aimed
to study the inflationary in string theory, mainly in terms of
Brane-Inflations and look for distinctive string signatures that can
be detected in current and future observational cosmology. The impact
of the structure of the higher dimensional bulk on the CMB predictions
e.g. the spectral index as well as the Non-Gaussianities will be studied.
Secondly lots of efforts will be focused in studying the nature of
dark energy and its observational signatures. In this regar, particular
emphasis will be given on the models of Modified Einstein's gravit on
large distance scale. Also one ofthe main aims of this project will be
to study the evolution of the overdensities in the accelerating universe
through spherical collapse model.
- DST - RFBR Project (2008 - 2010)
This is an Indo-Russian Project. The title of the project is "Brane World
Cosmology with Quintessence, Phantom Fields, Dark Matter and Dark Energy,
effectively described by Non-Linear Sigma Models".
- DST Project on Theoretical Cosmology
This is a joint research proposal with Delhi University (Dr. Deepak Jain
and Dr. Abha Dev).
