Zero-temperature phase of the XY spin glass in two dimensions: Genetic embedded matching heuristic

  title={Zero-temperature phase of the XY spin glass in two dimensions: Genetic embedded matching heuristic},
  author={Martin Weigel and Michel J. P. Gingras},
  journal={Physical Review B},
For many real spin-glass materials, the Edwards-Anderson model with continuous-symmetry spins is more realistic than the rather better understood Ising variant. In principle, the nature of an occurring spin-glass phase in such systems might be inferred from an analysis of the zero-temperature properties. Unfortunately, with few exceptions, the problem of finding ground-state configurations is a non-polynomial problem computationally, such that efficient approximation algorithms are called for… 
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