Electronic Resource
Springer
The European physical journal
65 (1987), S. 329-335
ISSN:
1434-6036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The specific heat of theXY model develops a characteristic double peak as a function of an applied magnetic field at relatively low temperatures. We argue that such a behavior is generic for planar spin chains, including chains with single-site anisotropy, and should be amenable to experimental observation. We also show that anharmonic corrections in the standard spin-wave theory exhibit certain infrared anomalies which limit the validity of perturbative calculations.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01303719
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