We study the fluctuation entropy for two-dimensional
matter systems with an internal symmetry coupled to
Jackiw--Teitelboim(JT) gravity joined to a Minkowski region. The
fluctuation entropy is the Shannon entropy associated with
I will discuss recent work on a Hayden & Preskill like setup
for both maximally chaotic and sub- maximally chaotic quantum field
theories. I will discuss computations of various quantum
information measures on the boundary that tell us when a...
In an ordinary quantum field theory, the "split property"
implies that the state of a system can be specified independently
on a bounded subregion of a Cauchy slice and its complement. This
property does not hold for theories of gravity. It can be...
In this talk I will discuss models of two-dimensional gravity
that resolve the factorization puzzle and have a discrete spectrum,
whilst retaining a semiclassical description. A novelty of these
models is that they contain non-trivially correlated...
We present our studies on the late-time von Neumann entropy and
its transition in Brownian SYK models. Without measurement, we show
that the correlations between different replicas account for the
Page curve at late time, and a permutation group...