Excitations of a single spin embedded in the XY chain are studied. We find that the magnetization does not approach equilibrium, even if the external magnetic field approaches a non-zero limit, and that the oscillatory excitation resonates with the edge of the one particle spectrum band.
Dynamics of a local perturbation in the X--Y model (II) / D. B., Abraham; E., Barouch; Gallavotti, Giovanni; A., Martin Lof. - In: STUDIES IN APPLIED MATHEMATICS. - ISSN 0022-2526. - STAMPA. - 51:(1972), pp. 211-218.
Dynamics of a local perturbation in the X--Y model (II)
GALLAVOTTI, Giovanni;
1972
Abstract
Excitations of a single spin embedded in the XY chain are studied. We find that the magnetization does not approach equilibrium, even if the external magnetic field approaches a non-zero limit, and that the oscillatory excitation resonates with the edge of the one particle spectrum band.File allegati a questo prodotto
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