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...
The branching time in SYK-like models is defined as the average
time separation of rungs when computing the out-of-time-order
correlator. We argue that a parametrically large branching time is
necessary to obtain holographic models with non-trivial...
Recently, a new quantum information measure called pseudo
entropy was introduced as a generalization of entanglement entropy
to quantify quantum correlation between initial and final states in
a time-dependent system. In this talk, I will examine...
