On the stringy Hartle-Hawking state

Self Cite

Abstract:We elaborate on the recent claim [1] that non-perturbative effects in α , which are at the core of the FZZ duality, render the region just behind the horizon of the SL(2, R) k /U(1) black hole singular already at the classical level (g s = 0). We argue that the 2D classical SL(2, R) k /U(1) black hole could shed some light on quantum black holes in higher dimensions including large black holes in AdS 5 × S 5 .

Section: )supporting

confidence: 87%

A stringy glimpse into the black hole horizon

Itzhaki

Liram

2018

Self Cite

“…This fact leads to some interesting effects already in the corresponding cigar geometry [18,19] and consequently on the relevant Hartle-Hawking wave function [20].…”

Section: Exact Descriptionmentioning

confidence: 99%

On the black hole interior in string theory

Ben-Israel

Giveon

Itzhaki

et al. 2017

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Abstract:The potential behind the horizon of an eternal black hole in classical theories is described in terms of data that is available to an external observer -the reflection coefficient of a wave that scatters on the black hole. In GR and perturbative string theory (in α ), the potential is regular at the horizon and it blows up at the singularity. The exact reflection coefficient, that is known for the SL(2, R) k /U(1) black hole and includes nonperturbative α effects, seems however to imply that there is a highly non-trivial structure just behind the horizon.

“…Recent firewall paradoxes related to black hole horizons, caused a revival of the study of string theory near black hole horizons [13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Jhep08(2016)113mentioning

confidence: 99%

“…We have also denoted for the different superstring theories, whether each state is present in the spectrum ( ) or not (−). 20 Some remarks are in order here.…”

Section: Jhep08(2016)113mentioning

confidence: 99%

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String theory in polar coordinates and the vanishing of the one-loop Rindler entropy

Mertens

Verschelde

Захаров

2016

Abstract:We analyze the string spectrum of flat space in polar coordinates, following the small curvature limit of the SL(2, R)/U(1) cigar CFT. We first analyze the partition function of the cigar itself, making some clarifications of the structure of the spectrum that have escaped attention up to this point. The superstring spectrum (type 0 and type II) is shown to exhibit an involution symmetry, that survives the small curvature limit. We classify all marginal states in polar coordinates for type II superstrings, with emphasis on their links and their superconformal structure. This classification is confirmed by an explicit large τ 2 analysis of the partition function. Next we compare three approaches towards the type II genus one entropy in Rindler space: using a sum-over-fields strategy, using a Melvin model approach as in [1] and finally using a saddle point method on the cigar partition function. In each case we highlight possible obstructions and motivate that the correct procedures yield a vanishing result: S = 0. We finally discuss how the QFT UV divergences of the fields in the spectrum disappear when computing the free energy and entropy using Euclidean techniques.