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- W2555059619 abstract "Heavy-Dense QCD (HDQCD) is a popular theory to investigate the sign problem in quantum field theory. Besides its physical applications, HDQCD is relatively easy to implement numerically: the fermionic degrees of freedom are integrated out, and the fermion determinant factorises into local ones. The theory has a sign problem, the severeness of which depends on the value of the chemical potential, which makes this theory ideal to test the reach of new algorithms. We use the LLR approach to obtain the probability distribution of the phase of the fermion determinant. Our goal is the calculation of the phase factor expectation value, which appears as Fourier transform of this probability distribution. We here propose a new and systematic moment expansion for this phase factor. We compare the answer from the moment expansion order by order with the exact answer. We find that this expansion converge quickly and works very well in the strong sign problem region." @default.
- W2555059619 created "2016-11-30" @default.
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- W2555059619 date "2016-11-04" @default.
- W2555059619 modified "2023-09-27" @default.
- W2555059619 title "Tackling the sign problem with a moment expansion and application to Heavy dense QCD" @default.
- W2555059619 hasPublicationYear "2016" @default.
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