57 citations · 153 across the 14 of their papers we have counts for
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The cosmological necklace problem
Andreas Blommaert, Jonah Kudler-Flam, Vladimir Narovlansky +1
We investigate 3d de Sitter axion wormhole which contribute to the no-boundary density matrix. We identify "cosmological necklace" solutions: an infinite series of Euclidean saddle…
String stars, small black holes, and the supersymmetric index
Erez Y. Urbach
We discuss aspects of the black hole-string transition as the angular velocity approaches the supersymmetric index . In this limit, the high-temperature Atick-Witten effec…
A spin on Hagedorn temperatures and string stars
Josef Seitz, Erez Y. Urbach
We discuss the correspondence between highly excited strings and black holes in the presence of angular momentum. At fixed imaginary angular velocity , we show that free strings…
Absolute entropy and the observer's no-boundary state
Andreas Blommaert, Jonah Kudler-Flam, Erez Y. Urbach
We investigate the no-boundary proposal for closed universes with an observer. We argue that the observer's no-boundary state is the identity operator on the physical Hilbert space…
On type II string theory on and symmetric orbifolds
Ofer Aharony, Erez Y. Urbach
We discuss in detail the -dimensional superconformal field theory dual to type II string theory on , emphasizing the string theoretic aspects of thi…
The black hole/string transition in AdS and confining backgrounds
Erez Y. Urbach
String stars, or Horowitz-Polchinski solutions, are Euclidean string theory saddles with a normalizable condensate of thermal winding strings. String stars were suggested as a poss…
Explicit holography for vector models at finite , volume and temperature
Ofer Aharony, Shai M. Chester, Tal Sheaffer +1
In previous work we constructed an explicit mapping between large vector models (free or critical) in dimensions and a non-local high-spin gravity theory on , su…
Onset of Quantum Chaos in Random Field Theories
Micha Berkooz, Adar Sharon, Navot Silberstein +1
We study the quantum Lyapunov exponent in theories with spacetime-independent disorder. We first derive self-consistency equations for the two- and four-point functions for p…
String Stars in Anti de Sitter Space
Erez Y. Urbach
We study the `string star' saddle, also known as the Horowitz-Polchinski solution, in the middle of d+1 dimensional thermal AdS space. We show that there's a regime of temperatures…
The onset of quantum chaos in disordered CFTs
Micha Berkooz, Adar Sharon, Navot Silberstein +1
We study the Lyapunov exponent in quantum field theories with spacetime-independent disorder interactions. Generically can only be computed at isolated points in parame…
AdS from CFT for scalar QED
Ofer Aharony, Shai M. Chester, Erez Y. Urbach
We construct an explicit bulk dual in anti-de Sitter space, with couplings of order , for the -singlet sector of QED in space-time dimensions () coupled…
The entanglement entropy of typical pure states and replica wormholes
Erez Y. Urbach
In a 1+1 dimensional QFT on a circle, we consider the von Neumann entanglement entropy of an interval for typical pure states. As a function of the interval size, we expect a Page…
A Derivation of AdS/CFT for Vector Models
Ofer Aharony, Shai M. Chester, Erez Y. Urbach
We explicitly rewrite the path integral for the free or critical (or ) bosonic vector models in space-time dimensions as a path integral over fields (including mas…
Generalized Hawking-Page transitions
Ofer Aharony, Erez Y. Urbach, Maya Weiss
We construct holographic backgrounds that are dual by the AdS/CFT correspondence to Euclidean conformal field theories on products of spheres , for conformal…