QCD phase diagram for nonzero isospin-asymmetry

Abstract

The QCD phase diagram is studied in the presence of an isospin asymmetry using continuum extrapolated staggered quarks with physical masses. In particular, we investigate the phase boundary between the normal and the pion condensation phases and the chiral/deconfinement transition. The simulations are performed with a small explicit breaking parameter in order to avoid the accumulation of zero modes and thereby stabilize the algorithm. The limit of vanishing explicit breaking is obtained by means of an extrapolation, which is facilitated by a novel improvement program employing the singular value representation of the Dirac operator. Our findings indicate that no pion condensation takes place above $T\approx 160$ MeV and also suggest that the deconfinement crossover continuously connects to the BEC-BCS crossover at high isospin asymmetries. The results may be directly compared to effective theories and model approaches to QCD.

17 pages, 14 figures; v2: to match published version, corrected typos and updated references

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• Dualities in dense quark matter with isospin, chiral and chiral isospin imbalance in the framework of the large-N${}_c$ limit of the NJL${}_4$ model
• Recent progresses on QCD phases in a strong magnetic field -- views from Nambu--Jona-Lasinio model
• Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature
• Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry
• Two-colour QCD phases and the topology at low temperature and high density
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• Lattice study of thermodynamic properties of dense QC${}_2$D
• Reliability of Taylor expansions in QCD
• Cold QCD at finite isospin density: confronting effective models with recent lattice data
• High-Temperature QCD: theory overview
• Lattice simulations of the QCD chiral transition at real baryon density
• QCD constraints on isospin-dense matter and the nuclear equation of state
• Isospin asymmetry in holographic baryonic matter
• Chiral anomaly induces superconducting baryon crystal
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• High-Energy Phase Diagrams with Charge and Isospin Axes under Heavy-Ion Collision and Stellar Conditions
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• Effects of Dense Quark Matter on Gluon Propagators in Lattice QC${}_2$D
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• Magnetic Vortex Lattices in Finite Isospin Chiral Perturbation Theory
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• Absence of inhomogeneous chiral phases in 2+1-dimensional four-fermion and Yukawa models
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• QCD Kondo excitons
• Finite-Density Massless Two-Color QCD at Isospin Roberge-Weiss Point and 't Hooft Anomaly
• Reentrant pion superfluidity and cosmic trajectories within PNJL model
• Critical point and Bose-Einstein condensation in pion matter
• Formation of a supergiant quantum vortex in a relativistic Bose-Einstein condensate driven by rotation and a parallel magnetic field
• On the origin of the peak of the sound velocity for isospin imbalanced strongly interacting matter
• Strange quark matter as dark matter: 40 years later, a reappraisal
• Describing the speed of sound peak of isospin-asymmetric cold strongly interacting matter using effective models
• Thermodynamic properties of interacting bosons with zero chemical potential
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• Heavy-quark spin polarization induced by the Kondo effect in a magnetic field
• Quarkyonic picture of isospin QCD
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• Gluon Propagators in $2+1$ Lattice QCD with Nonzero Isospin Chemical Potential
• Magnetic field effect on pion superfluid
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• Estimates of Lee-Yang zeros and a possible critical point on the pion condensate boundary in the QCD isospin phase diagram using an unbiased exponential resummation on the lattice
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• The cosmic QCD transition for large lepton flavour asymmetries
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• Light mesons around critical end points in $T-{\mu }_B-{\mu }_I-eB$ space
• Bose-Einstein Condensation and Dissipative Dynamics in a Relativistic Pion Gas
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• The phases of QCD reached in terrestrial and cosmic colliders
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