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Composite reweighting SU(2) QCD at Finite Temperature

P. R. Crompton
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Abstract

The Glasgow reweighting method is evaluated for SU(2) lattice gauge theory at nonzero μand finite T. We establish that the ' overlap problem' of SU(3) measurements, in which the transition points determined from thermodynamic observables have an unphysical dependence on the value of μused in the reweighting persists for SU(2). By combining the information from different lattice ensembles we alleviate sampling bias in the fugacity expansion, and identify the Lee-Yang zeros associated with the transition to a high density phase that can plausibly be associated with diquark condensation. We also confirm the existence of a line of first order transitions above a critical point in the T-μplane previously identified by effective chiral lagrangian calculations.

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P. R. Crompton. 2001-11-13. Composite reweighting SU(2) QCD at Finite Temperature. https://doi.org/10.1016/s0550-3213(02)00031-7

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