Holographic insights and puzzles

TL;DR

This paper explores holographic dualities in AdS/CFT, introducing new gravitational solutions for deconfined phases, and discusses puzzles related to entropy and time evolution in holographic models.

Contribution

It proposes two new gravitational solutions, black funnels and black droplets, to model deconfined phases, and examines entropy puzzles in time-dependent holographic states.

Findings

Introduction of black funnel and black droplet solutions

Identification of entropy puzzles in time-dependent states

Discussion of holographic duals in rotating black hole backgrounds

Abstract

The talk is composed of two parts, both set within the AdS/CFT context. In the first part, I discuss holographic insight into strongly coupled field theory in a black hole background. I conjecture two new gravitational solutions, dubbed black funnels and black droplets, which describe two distinct deconfined phases in the field theory at finite temperature. I also briefly mention puzzles associated with an analogous set-up in a rotating black hole background. In the second part of the talk, I discuss time-dependent states in a CFT on flat spacetime background, exemplified by the conformal soliton flow. Here I focus on puzzles regarding the nature of entropy in time-evolving states and its holographic dual.