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- Homi Bhabha National InstituteIN282 papers
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29 papers · 1 filter
Topological Defects in the Left-Right Symmetric Model and their Relevance to Cosmology
U. A. Yajnik, Hatem Widyan, Shobhit Mahajan +2
It is shown that the minimal left-right symmetric model admits cosmic string and domain wall solutions. The cosmic strings arise when the SU(2)_R is broken and can either be destab…
BPS D-branes on Non-supersymmetric Cycles
Ashoke Sen
In certain regions of the moduli space of K3 and Calabi-Yau manifolds, D-branes wrapped on non-supersymmetric cycles may give rise to stable configurations. We show that in the orb…
A supersymmetric resolution of the anomaly in charmless nonleptonic -decays
Debajyoti Choudhury, B. Dutta, Anirban Kundu
We examine the large branching ratio for the process from the standpoint of R parity violating supersymmetry. We have given all possible violating contrib…
A geometrical interpretation of parity violation in gravity with torsion
Biswarup Mukhopadhyaya, Soumitra Sengupta
In a space-time with torsion, the action for the gravitational field can be extended with a parity-violating piece. We show how to obtain such a piece from geometry itself, by suit…
Transport in Double-Crossed Luttinger Liquids
P. Durganandini, Sumathi Rao
We study transport through two Luttinger liquids (one-dimensional electrons interacting through a Coulomb repulsion in a metal) coupled together at {\it two} points. External volta…
Boundary Fluctuations of AdS String
Sudipta Mukherji, Sudhakar Panda
We analyse the world-sheet perturbations of string theory formulated around background. We identify a set of operators that, while added to the world-sheet action, generate…