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Infinite ground state degeneracy and glassy dynamics in the frustrated XY model and lattice Coulomb gas with f=16

Author

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  • Lee, Sung Jong
  • Kim, Bongsoo
  • Lee, Jooyoung

Abstract

Novel features of glassy dynamics is found via Monte Carlo simulations in the uniformly frustrated XY model and the lattice Coulomb gas on a square lattice with the frustration parameter f=16. The ground state vortex configuration has infinite degeneracies. It is also found through energy histogram methods that the system exhibits no signature of first-order transitions at low temperatures. Instead, the system exhibits a glassy behavior resembling the primary relaxation of fragile supercooled liquids as evidenced by strong non-Arrhenius (Vogel–Tammann–Fulcher) behavior of the relaxation time. A strong correlation is found between the trend of violation of the Stokes–Einstein relation and the degree of non-exponentiality.

Suggested Citation

  • Lee, Sung Jong & Kim, Bongsoo & Lee, Jooyoung, 2002. "Infinite ground state degeneracy and glassy dynamics in the frustrated XY model and lattice Coulomb gas with f=16," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 315(1), pages 314-320.
    • Handle: RePEc:eee:phsmap:v:315:y:2002:i:1:p:314-320
    DOI: 10.1016/S0378-4371(02)01232-3
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