Study on energy diffusive phenomenon in quantum spin chains

Keiji Saito

doi:10.1143/JPSJS.72SC.66

Study on energy diffusive phenomenon in quantum spin chains

Keiji Saito

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Energy transport in quantum spin chains is considered. We first discuss the Heisenberg chain with weak perturbation. In the region where the field theoretical treatment is valid, an anomalous transport still exists in the presence of the Umklapp term. We next consider the large perturbation where trivial symmetries does not exist. In this case, the Green-Kubo formula converges, and the normal thermal conduction appears.

Original language	English
Pages (from-to)	66-68
Number of pages	3
Journal	Journal of the Physical Society of Japan
Volume	72
Issue number	SUPPL.C
DOIs	https://doi.org/10.1143/JPSJS.72SC.66
Publication status	Published - 2003
Externally published	Yes

Keywords

Quantum spin chains
Thermal conduction

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJS.72SC.66

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abstract = "Energy transport in quantum spin chains is considered. We first discuss the Heisenberg chain with weak perturbation. In the region where the field theoretical treatment is valid, an anomalous transport still exists in the presence of the Umklapp term. We next consider the large perturbation where trivial symmetries does not exist. In this case, the Green-Kubo formula converges, and the normal thermal conduction appears.",

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author = "Keiji Saito",

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AB - Energy transport in quantum spin chains is considered. We first discuss the Heisenberg chain with weak perturbation. In the region where the field theoretical treatment is valid, an anomalous transport still exists in the presence of the Umklapp term. We next consider the large perturbation where trivial symmetries does not exist. In this case, the Green-Kubo formula converges, and the normal thermal conduction appears.

KW - Quantum spin chains

KW - Thermal conduction

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