Locality of temperature in spin chains

Autor: Senaida Hernández-Santana, Arnau Riera, Karen V Hovhannisyan, Martí Perarnau-Llobet, Luca Tagliacozzo, Antonio Acín
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: New Journal of Physics, Vol 17, Iss 8, p 085007 (2015)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/17/8/085007
Popis: In traditional thermodynamics, temperature is a local quantity: a subsystem of a large thermal system is in a thermal state at the same temperature as the original system. For strongly interacting systems, however, the locality of temperature breaks down. We study the possibility of associating an effective thermal state to subsystems of infinite chains of interacting spin particles of arbitrary finite dimension. We study the effect of correlations and criticality in the definition of this effective thermal state and discuss the possible implications for the classical simulation of thermal quantum systems.
Databáze: Directory of Open Access Journals