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Prog. Theor. Phys. Supplement No.157 (2005) pp. 69-72
The Nature of the Specific Heat of Ising Spin Glass
Hidetsugu Kitatani,
Toshimasa Chino,
Hideshi Ohya and
Takanobu Baba
Department of Electrical Engineering,
Nagaoka University of Technology, Nagaoka 940-2188, Japan
Abstract:
The specific heat of finite dimensional (two- and
three-dimentional) ±J Ising models and infinite-range
Ising spin glass (Sherrington-Kirkpatrick (SK) model)
has been investigated by Monte Carlo simulations
from a new point of view.
The region where a part of the specific heat takes a
negative value has been investigated, which is
characteristic of frustrated systems and reflects the
non-trivial degeneracy of the ground state.
For each model, the region mentioned above is found
to be fairly large in the corresponding
phase diagram, which includes the Nishimori line.
URL :
http://ptp.ipap.jp/link?PTPS/157/69/
DOI : 10.1143/PTPS.157.69
References:
-
H. Kitatani, T. Chino and H. Oya, J. of Phys. A 36 (2003), 4509[IoP STACKS].
- H. Nishimori, Prog. Theor. Phys. 66 (1981), 1169[PTP].
-
N. Ito, Y. Ozeki and H. Kitatani, J. Phys. Soc. Jpn. 68 (1999), 803[JPSJ].
-
M. Inoue, J. Phys. Soc. Jpn. 64 (1995), 3699[JPSJ].
-
R. Shanker, Phys. Rev. Lett. 23 (1987), 2466[APS].
-
S. Wiseman and E. Domany, Phys. Rev. B 51 (1995), 3074[APS].
-
W. Selke, L. N. Shchur and O. A. Vasilyev, Physica A 259 (1998), 388[CrossRef].
