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Finite-temperature dynamical structure factor of the Heisenberg-Ising chain

Abstract:

We consider the spin-1/2 Heisenberg XXZ chain in the regime of large Ising-type anisotropy Δ. By a combination of duality and Jordan-Wigner transformations we derive a mapping to weakly interacting spinless fermions, which represent domain walls between the two degenerate ground states. We develop a perturbative expansion in 1/Δ for the transverse dynamical spin structure factor at finite temperatures and in an applied transverse magnetic field. We present a unified description for both the l...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.79.214408
Journal:
Physical Review B More from this journal
Volume:
79
Issue:
21
Publication date:
2009-06-01
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Language:
English
Keywords:
Pubs id:
pubs:199321
UUID:
uuid:0b1bc706-61ea-4eff-8205-c2483b2e9c33
Local pid:
pubs:199321
Source identifiers:
199321
Deposit date:
2012-12-19

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