English

Stochastic series expansion simulation of the $t$-$V$ model

Strongly Correlated Electrons 2016-04-13 v2 Quantum Gases

Abstract

We present an algorithm for the efficient simulation of the half-filled spinless tt-VV model on bipartite lattices, which combines the stochastic series expansion method with determinantal quantum Monte Carlo techniques widely used in fermionic simulations. The algorithm scales linearly in the inverse temperature, cubically with the system size and is free from the time-discretization error. We use it to map out the finite temperature phase diagram of the spinless tt-VV model on the honeycomb lattice and observe a suppression of the critical temperature of the charge density wave phase in the vicinity of a fermionic quantum critical point.

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Cite

@article{arxiv.1602.02095,
  title  = {Stochastic series expansion simulation of the $t$-$V$ model},
  author = {Lei Wang and Ye-Hua Liu and Matthias Troyer},
  journal= {arXiv preprint arXiv:1602.02095},
  year   = {2016}
}

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