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Series expansions for a generalized XY hamiltonian

Author

Listed:
  • Rogiers, J.
  • Dekeyser, R.
  • Quisthoudt, M.

Abstract

The high-temperature series expansions for the square of the fluctuation in the order parameter, for the specific heat, the concentration and the concentration susceptibility for the Takagi model on an f.c.c. lattice are analysed in the field variables. We obtain for the critical exponent γ = 43 and the specific heat is possibly logarithmically divergent. If we take the tricritical point to be determined by γt = 1, the tricritical exponents αt, λt and ωt are found to be consistent with 12.

Suggested Citation

  • Rogiers, J. & Dekeyser, R. & Quisthoudt, M., 1975. "Series expansions for a generalized XY hamiltonian," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 81(1), pages 93-107.
    • Handle: RePEc:eee:phsmap:v:81:y:1975:i:1:p:93-107
    DOI: 10.1016/0378-4371(75)90038-2
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