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

Tibor Antal, Z. Rácz, László Sasvári

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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
Publication statusPublished - 1997

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Ising model
energy
phase diagrams
thresholds
decay
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Nonequilibrium steady state in a quantum system : One-dimensional transverse ising model with energy current. / Antal, Tibor; Rácz, Z.; Sasvári, László.

In: Physical Review Letters, Vol. 78, No. 2, 1997, p. 167-170.

Research output: Contribution to journalArticle

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