### 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 language | English |
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Pages (from-to) | 5184-5189 |

Number of pages | 6 |

Journal | Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics |

Volume | 57 |

Issue number | 5 |

DOIs | |

Publication status | Published - Jan 1 1998 |

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### ASJC Scopus subject areas

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

### Cite this

*Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics*,

*57*(5), 5184-5189. https://doi.org/10.1103/PhysRevE.57.5184