Groningen Scanning New Horizons Meeting (SNH2019)

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Groningen Scanning New Horizons Meeting (SNH2019)

May 24, 2019 @ 10:30 am - 5:00 pm

This meeting is part of the Dutch national program `Scanning New Horizons: Emergent Space-Time, Black Holes and Quantum Information’ which is based upon a collaboration between the universities of Amsterdam, Groningen, Leiden and Utrecht.

May 24th, 2019 @ Het Kasteel, Melkweg 1, 9718 EP Groningen.

It is a pleasant 15-minute walk from the Central Station.


10:30 Coffee/Tea

11:15 Erik Tonni (SISSA)

Title: On entanglement hamiltonians in 1D free lattice models

Abstract: The reduced density matrix can be written as the exponential
of the entanglement hamiltonian,  hence this operator contains a lot of
information about the entanglement of the bipartition when the entire 
system is in certain pure state. We discuss the derivation of the
entanglement hamiltonian of an interval for a massless Dirac fermion
in the ground state through the continuum limit of the corresponding
lattice results in the free fermions chain. We also present numerical
studies about the temporal evolution of the entanglement hamiltonians
and of the contours for the entanglement entropy of an interval after
a global quench in a harmonic chain and in a chain of free fermions. 

12:15 Lunch

13:30 Julian Sonner (Geneva)

Title: Quantum Thermalization in AdS/CFT

Abstract: via the AdS/CFT duality we can view black holes as thermal
ensembles of the dual field theory. In my talk I will report on several
detailed studies of low-dimensional examples such as 2D CFTs and
SYK-like models, which investigate and extend the scenario of
thermalization via eigenstates as the boundary description of black
holes and their dynamics.

14:30 Coffee/tea

15:00 Jeff Murugan (Kaapstad)

Title: Developments in randomness and chaos.

Abstract: Motivated by trying to understand the difference between
randomness and true chaos in quantum many-body systems, I will review a
selection of recent developments in the field. I will focus on two
examples; the first is a variant of the more familiar SYK model while
the second is a new class of problem we call quantum small worlds.

16:00 David Berenstein (Santa Barbara)

Title:Topology, superposition and typicality in quantum gravity

Abstract: I will describe recent advances in the study of quantum
gravity where one can explicitly show in examples that superpositions
of states with fixed topology can change the topology of spacetime.
These effects lead to paradoxes that are resolved in effective field
theory by the introduction of code subspaces. I will also talk about
more typical states and issues related on how to decide if a
black hole horizon is smooth or not.

17:00 Drinks


May 24, 2019
10:30 am - 5:00 pm


Het Kasteel
Melkweg 1,
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