Shamik Banerjee

Logarithmic corrections to extremal black hole entropy from quantum entropy function

We evaluate the one loop determinant of matter multiplet fields of

Logarithmic corrections to {N} = {4} and {N} = {8} black hole entropy: a one loop test of quantum gravity

\mathcal{N} = 4

Partition functions of torsion >1 dyons in heterotic string theory on T6

supergravity in the near horizon geometry of quarter BPS black holes, and use it to calculate logarithmic corrections to the entropy of these black holes using the quantum entropy function formalism. We show that even though individual fields give non-vanishing logarithmic contribution to the entropy, the net contribution from all the fields in the matter multiplet vanishes. Thus logarithmic corrections to the entropy of quarter BPS black holes, if present, must be independent of the number of matter multiplet fields in the theory. This is consistent with the microscopic results. During our analysis we also determine the complete spectrum of small fluctuations of matter multiplet fields in the near horizon geometry.

Interpreting the M2-brane action

A bstractWe compute logarithmic corrections to the entropy of supersymmetric extremal black holes in

Light States in Chern-Simons Theory Coupled to Fundamental Matter

\mathcal{N} = {4}

S-duality action on discrete T-duality invariants

and

Smoothed Transitions in Higher Spin AdS Gravity

\mathcal{N} = {8}