Year: 2020
Type: article
Abstract: Quantum many-body systems naturally present intricate entanglement patterns between the extensive number of degrees of freedom. In the presence of symmetry, the entanglement contribution of each symmetry sector gives a powerful lens through which to observe these patterns, both in theory and in experiment. It has been proposed that, in clean systems, an entanglement equipartition generically emerges, meaning that the different sectors contribute equally. This work shows that such equipartition is, not obviously, robust against disorder, at least in the random singlet phase of quantum spin chains. Furthermore, the authors identify the subleading term breaking the equipartition.
Institutions: The Abdus Salam International Centre for Theoretical Physics (ICTP), Scuola Internazionale Superiore di Studi Avanzati, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, University of Geneva, Institute for Theoretical Physics Amsterdam, University of Amsterdam
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3023293960