3 papers
hep-th2026
Logarithm of charge ratio in black hole entropy
Muktajyoti Saha, Ashoke Sen, P. Shanmugapriya
Logarithmic correction to BPS black hole entropy, computed from microscopic description, often contains terms involving large ratios of charges, besides the logarithmic terms invol…
hep-th2026
Exotic Branes and Symmetries of String Theory
Ashoke Sen
Are duality transformations symmetries of string theory? For AdS space-time the answer is no for generic asymptotic values of the moduli, since the duality symmetry is broken expli…
hep-th2025
Scattering of D0-branes and Strings
Ashoke Sen, Bogdan StefaÅski
It has been known for about thirty years that a scattering amplitude involving D0-branes and closed strings suffers from infrared divergences beyond tree level. These divergences a…