5 papers
Large Quantum Gravity Fluctuations of BTZ Black Holes
Ben Freivogel, Upamanyu Moitra
We study the quantum fluctuations of the black hole horizon in three-dimensional Anti-de Sitter (AdS) spacetime. We define a precise protocol to calculate the horizon fluctuations…
Duality-Invariant Higher-Derivative Corrections to Charged Stringy Black Holes
Upamanyu Moitra
We study duality-invariant higher-derivative corrections to the charged black hole geometry in two-dimensional heterotic string theory. We illustrate how the conventional perturbat…
Heterotic Black Holes in Duality-Invariant Formalism
Upamanyu Moitra
We consider the effective theory of heterotic strings in two spacetime dimensions, in a double field theory-inspired formalism, manifestly consistent with -duality in string the…
Quantum Entanglement Index in String Theory
Atish Dabholkar, Eleanor Harris, Upamanyu Moitra
We define a notion of `quantum entanglement index' with the aim to compute it for black hole horizons in string theory at one-loop order using the stringy replica method. We consid…
Finite Cut-Off Holography and the DBI Counter-Term
Dileep P. Jatkar, Upamanyu Moitra
We demonstrate some very special features of the Dirac-Born-Infeld--like (DBI) gravitational counter-term in AdS spacetime, in the context of holography with a sharp radial cut…