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On the Phase Shift and Bound States in a One‐Dimensional Antiferromagnetic Chain
Author(s) -
Costa B. V.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221550237
Subject(s) - antiferromagnetism , chain (unit) , anisotropy , condensed matter physics , phase (matter) , physics , function (biology) , upper and lower bounds , statistical physics , quantum mechanics , mathematics , mathematical analysis , evolutionary biology , biology
The behavior of small oscillations in an antiferromagnetic chain with an external magnetic field applied when a static kink is present is investigated. By using a Green's function approach the bound states and phase shifts are obtained and it is possible to show that a purely anisotropic model can generate the same thermodynamics.