Hall 123

Logarithmic correction to black hole entropy in universal low-energy string theory models

Gurmeet Singh

IISER Bhopal

I'll discuss the computation of the logarithmic correction to the entropy of asymptotically flat and AdS black holes (rotating, non-rotating, charged, and uncharged) embedded in Einstein-Maxwell-dilaton (EMD) theories with U(1)-charged. The leading quantum gravitational corrections in both extremal and non-extremal limits of black hole temperature can be designing a standard Euclidean gravity setup that evaluates the "logarithmic term" from one-loop effective actions via heat kernel method-based calculations. EMD theories are universal building blocks of compactified string theory or supergravity models in 4D. For a concrete example, we generalize the entire setup and calculate logarithmic corrections for black holes in U(1)^2-charged EMD models intersecting with N = 4 ungauged and gauged bosonic supergravity(STU Supergravity). In contrast to flat backgrounds, all the AdS44 results are non-topological, which provides a wider "infrared window" into the microscopic degrees of freedom of black holes in string theory. Based on arXiv:2210.16230 <arxiv.org/abs/2210.16230> and ongoing work.