GRG Editor's Choice: One point functions for black hole microstates

Garcia i Tormo, J. & Taylor, M., One point functions for black hole microstates, Gen Relativ Gravit (2019) 51: 89. https://doi.org/10.1007/s10714-019-2566-6

Editor's Choice (Research Article)

First Online: 11 July 2019

Part of the Topical Collection: "The Fuzzball Paradigm"

"One of the novel aspects of their work is computing the one-point functions for the 1/8-BPS (three charge) states. This paper is an important progress in the field."

Abstract:

We compute one point functions of chiral primary operators in the D1–D5 orbifold CFT, in classes of states corresponding to microstates of two and three charge black holes. Black hole microstates describable by supergravity solutions correspond to coherent superpositions of states in the orbifold theory and we develop methods for approximating one point functions in such superpositions in the large N limit. We show that microstates built from long strings (large twist operators) have one point functions that are suppressed by powers of N. Accordingly, even when these microstates admit supergravity descriptions, the characteristic scales in these solutions are comparable to higher derivative corrections to supergravity.

The authors: 

Joan Garcia Tormo is a Postgraduate research student within Mathematical Sciences at the University of Southampton. He is working on holography and black holes in higher dimensions.

Marika Taylor is a Professor of Theoretical Physics and Head of School within Mathematical Sciences at the University of Southampton. Her research interests include all aspects of string theory, gravitational physics and quantum field theory. In recent years much of her work has been focused on holographic dualities and their implications.

GRG Editor's Choice:

In each volume of GRG, a few papers are marked as “Editor’s Choice”. The primary criteria is original, high quality research that is of wide interest within the community.