Numerical study of fermion and boson models with infinite-range random interactions

  title={Numerical study of fermion and boson models with infinite-range random interactions},
  author={Wenbo Fu and S. Sachdev},
  journal={Physical Review B},
  • Wenbo Fu, S. Sachdev
  • Published 2016
  • Physics
  • Physical Review B
  • We present numerical studies of fermion and boson models with random all-to-all interactions (the SYK models). The high temperature expansion and exact diagonalization of the $N$-site fermion model are used to compute the entropy density: our results are consistent with the numerical solution of $N=\infty$ saddle point equations, and the presence of a non-zero entropy density in the limit of vanishing temperature. The exact diagonalization results for the fermion Green's function also appear to… CONTINUE READING
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