269 citations · 3k across the 52 of their papers we have counts for
13 papers · 2 filters
Asymptotic Expansion of the N=4 Dyon Degeneracy
Nabamita Banerjee, Dileep P. Jatkar, Ashoke Sen
We study various aspects of power suppressed as well as exponentially suppressed corrections in the asymptotic expansion of the degeneracy of quarter BPS dyons in N=4 supersymmetri…
Quantum Entropy Function from AdS(2)/CFT(1) Correspondence
Ashoke Sen
We review and extend recent attempts to find a precise relation between extremal black hole entropy and degeneracy of microstates using AdS_2/CFT_1 correspondence. Our analysis lea…
Genus Two Surface and Quarter BPS Dyons: The Contour Prescription
Shamik Banerjee, Ashoke Sen, Yogesh K. Srivastava
Following the suggestion of hep-th/0506249 and hep-th/0612011, we represent quarter BPS dyons in N=4 supersymmetric string theories as string network configuration and explore the…
Coulomb Branch of the Lorentzian Three Algebra Theory
Sergio Cecotti, Ashoke Sen
We analyze the coulomb branch of the non-unitary Lorentzian three algebra theory that has been proposed as a possible candidate for describing the world volume theory of multiple M…
Ads(3)/CFT(2) to Ads(2)/CFT(1)
Rajesh Kumar Gupta, Ashoke Sen
It has been suggested that the quantum generalization of the Wald entropy for an extremal black hole is the logarithm of the ground state degeneracy of a dual quantum mechanics in…
Interpreting the M2-brane Action
Shamik Banerjee, Ashoke Sen
The world-volume theory of multiple M2-branes proposed recently has a free scalar field. For large vev of this scalar field the world-volume action reduces to that of multiple D2-b…