Mixed tensor susceptibility of the QCD vacuum from effective quark–quark interactions

Zhang, Zhao; Zhao, Wenjin

doi:10.1016/j.physletb.2005.03.012

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Similarly, based on a colored current-current but nonlocal interaction, the global color model (GCM) of QCD was proposed and successfully explained many properties of non-perturbative QCD with relatively strong couplings [57][58][59][60]. Thus, it suggests that G S , G V and G A are positive at zero and low temperatures.…”

Section: Model With the Axial-vector Interactionmentioning

confidence: 99%

Spontaneous generation of localCPviolation and inverse magnetic catalysis

Liu

Huang

2014

Phys. Rev. D

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In the chiral symmetric phase, the polarized instanton-anti-instanton molecule pairing induces a nontrivial repulsive interaction in the iso-scalar axial-vector channel. As a consequence, one unusual property is observed that in the chiral restoration phase, there is a first order phase transition for the spontaneous generation of local CP violation and chirality imbalance. Furthermore, it is found that external magnetic fields will lower the critical temperature for the local CP-odd phase transition and catalyze the chirality imbalance, which destroys the chiral condensate with pairing quarks between different chiralities. A reasonable strength of the repulsive interaction in the iso-scalar axial-vector channel can naturally explain the inverse magnetic catalysis around the critical temperature under external magnetic fields.

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Section: Model With the Axial-vector Interactionmentioning

confidence: 99%

Spontaneous generation of localCPviolation and inverse magnetic catalysis

Liu

Huang

2014

Phys. Rev. D

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“…Therefore, it is interesting to investigate the thermal and dense properties of these new types of low-dimensional condensates and their effects on the physical hadronic observables. Since the Global Color Model (GCM) [16,17,18,19] is an effective quark and gluon fields theory and has been successfully used to investigate the property of the traditional mixed quark-gluon condensate [20,21] and other QCD condensates [22], we will adopt this model to explore the thermal and dense properties of above induced mixed condensates. In this paper, we only consider the possible pion superfluidity phase transition and pion mixed quark-gluon condensate.…”

Section: Introductionmentioning

confidence: 99%

Two-flavor QCD phases and condensates at finite isospin chemical potential

Zhang

Liu

2007

Phys. Rev. C

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We study the phase structure and condensates of two-flavor QCD at finite isospin chemical potential in the framework of a confining, Dyson-Schwinger equation model. We find that the pion superfluidity phase is favored at high enough isospin chemical potential. A new gauge invariant mixed quark-gluon condensate induced by isospin chemical potential is proposed based on Operator Product Expansion. We investigate the sign and magnitude of this new condensate and show that it's an important condensate in QCD sum rules at finite isospin density.

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Landau gauge condensates from global color model

Zhang

Zhao

2005

Physics Letters B

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We compute the dimension-2 gluon pair condensate g 2 AA and the dimension-4 mixed quark-gluon condensate qgA · γq in Landau gauge within the framework of global color model. The result for the dynamical gluon mass is within the range given by other independent determinations. The obtained mixed Landau gauge condensate qgA · γq is clearly dependent on the definitions of the condensates. We show that the consistent result may be obtained when the same definitions are used.

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Mixed tensor susceptibility of the QCD vacuum from effective quark–quark interactions

Cited by 6 publications

References 29 publications

Spontaneous generation of localCPviolation and inverse magnetic catalysis

Spontaneous generation of localCPviolation and inverse magnetic catalysis

Two-flavor QCD phases and condensates at finite isospin chemical potential

Landau gauge condensates from global color model

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