EFFECT OF EXTERNAL MAGNETIC FIELD ON LOW-ENERGY BEHAVIOR OF ONE-DIMENSIONAL HEISENBERG CHAIN | Zendy

Gao Yang | Zendy; Yumei Zhang | Zendy; Chen Hong | Zendy

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EFFECT OF EXTERNAL MAGNETIC FIELD ON LOW-ENERGY BEHAVIOR OF ONE-DIMENSIONAL HEISENBERG CHAIN

Author(s) -

Gao Yang,

Yumei Zhang,

Chen Hong

Publication year - 2000

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.49.1586

Subject(s) - bosonization , physics , condensed matter physics , antiferromagnetism , paramagnetism , magnetization , ground state , fermi energy , anisotropy , heisenberg model , spin (aerodynamics) , magnetic field , field (mathematics) , field dependence , quantum mechanics , fermion , thermodynamics , electron , mathematics , pure mathematics

Spin-1/2 anisotropic Heisenberg chain in longitudinal external magnetic field is studied by traditional Jordan-Wigner transformation and bosonization method. In the presence of an external field, both Fermi velocity and Fermi momentum are changed, thus the bosonization procedure is also changed. The antiferromagnetic phase and paramagnetic phase are discussed and the dependence of ground state energy and magnetization on the field are calculated and depicted for some typical cases.

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