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  2. 2018
  3. October
  4. Supercritical entanglement, violation of cluster decomposition and anomalous dynamics in some local quantum spin models

Oct

08

Monday

Supercritical entanglement, violation of cluster decomposition and anomalous dynamics in some local quantum spin models

3.00pm

Seminars

Staff, Students, Academics

Research Centre: Department of Mathematics

Speaker: Luca Dell Anna (Padova)

Abstract:

We compute the correlation functions in two classes of integer and half-integer spin chains whose ground states can be expressed in terms of uniform superpositions of Motzkin and Dyck paths. We find that when long-distance correlations occur, there is a square root deviation from the area law for the entanglement entropy and a light-cone profile for the propagation of excitations after a quantum quench is absent.

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When & where

3.00pm - 4.00pmMonday 8th October 2018

C300 Tait Building City, University of London Northampton Square London EC1V 0HB United Kingdom