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arXiv · 2207.03301

Re-entrance effect in the high-temperature critical phase of the quantum dimer model on the square lattice

Bhupen Dabholkar·G. J. Sreejith·Fabien Alet
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Abstract

We present a quantum Monte Carlo investigation of the finite-temperature phase diagram of the quantum dimer model on the square lattice. We use the sweeping cluster algorithm, which allows to implement exactly the dimer constraint, supplemented with a equal-time directed loop move that allows to sample winding sectors. We find a high-temperature critical phase with power-law correlations that extend down to the Rokshar-Kivelson point, in the vicinity of which a re-entrance effect in the lines of constant exponent is found. For small values of the kinetic energy strength, we find finite-temperature transitions to ordered states (columnar and staggered) which match those of interacting classical dimer models.

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Bhupen Dabholkar, G. J. Sreejith, Fabien Alet. 2022-07-07. Re-entrance effect in the high-temperature critical phase of the quantum dimer model on the square lattice. https://doi.org/10.1103/physrevb.106.205121

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