Nonequilibrium steady state in a quantum system: One-dimensional transverse ising model with energy current

Tibor Antal, Zoltán Rácz, László Sasvári

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

We study the nonequilibrium steady states of an Ising chain in a transverse field h by investigating the effect of a field λ, which drives the current of energy. The zero-temperature, h − λ phase diagram is determined exactly, and it is found that the energy current appears continuously above a threshold λ > λc(h). The long-range magnetic order (present for h < hc, λ < λc) is destroyed in the current-carrying state where the correlations are characterized by power-law, oscillatory decay. The mechanism which generates the power-law correlations in the current-carrying state is discussed.

Original languageEnglish
Pages (from-to)167-170
Number of pages4
JournalPhysical review letters
Volume78
Issue number2
DOIs
Publication statusPublished - Jan 13 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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