Isotropic transverse [Formula Presented] chain with energy and magnetization currents

T. Antal, Z. Rácz, A. Rákos, G. M. Schütz

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Abstract

The ground-state correlations are investigated for an isotropic transverse [Formula Presented] chain that is constrained to carry either a current of magnetization [Formula Presented] or a current of energy [Formula Presented]. We find that the effect of [Formula Presented] on the large-distance decay of correlations is twofold: (i) Oscillations are introduced and (ii) the amplitude of the power-law decay increases with increasing current. The effect of energy current is more complex. Generically, correlations in current carrying states are found to decay faster than in the [Formula Presented] states, contrary to expectations that correlations are increased by the presence of currents. However, increasing the current, one reaches a special line where the correlations become comparable to those of the [Formula Presented] states. On this line, the symmetry of the ground state is enhanced and the transverse magnetization vanishes. A further increase of the current destroys the extra symmetry, but the transverse magnetization remains at the high-symmetry zero value.

Original languageEnglish
Pages (from-to)5184-5189
Number of pages6
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume57
Issue number5
DOIs
Publication statusPublished - Jan 1 1998

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

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