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

Sung Jong Lee, Bongsoo Kim and Jooyoung Lee

Physica A: Statistical Mechanics and its Applications, 2002, vol. 315, issue 1, 314-320

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.

Keywords: Uniformly frustrated XY model; Lattice coulomb gas; Glass transition; Fragile supercooled liquids (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:315:y:2002:i:1:p:314-320

DOI: 10.1016/S0378-4371(02)01232-3

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