Finite density simulations using a determinant estimator

Details Finite density simulations using a determinant estimator Finite density simulations using a determinant estimator

2007-11-16

arxiv.org/abs/0711.2678v1

PoSLAT2007:167,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, Contribution to Lattice 2007, Regensburg, Germany, 30 July - 4 August 2007

Scientific paper

Previous investigations have shown that the canonical approach to simulating QCD at finite density is promising. The algorithm we used in our earlier work employs an exact calculation of the fermionic determinant which limits the size of the lattices we can simulate. Interesting questions can only be answered if we simulate at larger volume. In this paper we explore an algorithm, Hybrid Noisy Monte Carlo, that employs a determinant estimator rather than an exact calculation. We first present the technical aspects of the estimator, check that the algorithm is correct by comparing it with our previous study, and then discuss its merits. We will also discuss the challenges faced when simulating larger lattice volumes.

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