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First-order phase transition in dynamical 3-flavor QCD at imaginary isospin

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arxiv 2501.00792 v2 pith:4NOB7FKC submitted 2025-01-01 hep-lat hep-phnucl-th

Gergely Endrodi , Guy D. Moore , Alessandro Sciarra This is my paper · ORCID
classification hep-lathep-phnucl-th
keywords analysisimaginaryisospinquarktransitionbehaviorcasecenter
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We revisit QCD with three mass-degenerate quark flavors at an imaginary isospin chemical potential set to 4 pi T/3. This choice corresponds to a special point in the parameter space, where the theory possesses an exact Z(3) center symmetry. Through a finite-size scaling analysis, we demonstrate that in this case the finite temperature QCD transition is of first order and entails singular behavior both in the Polyakov loop and in the quark condensate. Our results are based on simulations with stout-smeared staggered quarks and a dedicated multi-histogram analysis.

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Cited by 1 Pith paper

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  1. Condensation of lighter-than-physical pions in QCD

    hep-lat 2025-01 conditional novelty 5.0 of 10

    At half the physical light quark mass, the pion Bose-Einstein condensation boundary in QCD remains vertical and approaches zero chemical potential linearly as the pion mass decreases.

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