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- Homi Bhabha National InstituteIN282 papers
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36 papers · 1 filter
Tachyon condensation in string field theory
Ashoke Sen, Barton Zwiebach
It has been conjectured that at a stationary point of the tachyon potential for the D-brane of bosonic string theory, the negative energy density exactly cancels the D-brane tensio…
Universality of the Tachyon Potential
Ashoke Sen
Using string field theory, we argue that the tachyon potential on a D-brane anti-D-brane system in type II string theory in arbitrary background has a universal form, independent o…
Vacuumless cosmic strings in Brans-Dicke theory
A. A. Sen
The gravitational fields of vacuumless global and gauge strings have been studied in Brans-Dicke theory under the weak field assumption of the field equations. It has been shown th…
Leptoquark Contribution to the Higgs Boson Production at the LHC Collider
Pankaj Agrawal, Uma Mahanta
In this report we study how a light-scalar leptoquark could affect the Higgs boson production cross-section at the LHC collider. We construct the most general renormalizable and ga…
Transport in a class of exactly solvable models of interacting fermions
P. K. Mohanty, Sumathi Rao
We study transport in a class of exactly solvable models of interacting fermions in one dimension. We contrast these models with models of non-interacting fermions in an Aharanov-B…
CMB Polarization Data and Galactic Foregrounds: Estimation of Cosmological Parameters
S. Prunet, S. K. Sethi, F. R. Bouchet
We estimate the accuracy with which various cosmological parameters can be determined from the CMB temperature and polarization data when various galactic unpolarized and polarized…