Finite Temperature ($\mu=0$)

Bazavov, A.

doi:10.22323/1.214.0392

Cited by 6 publications

(11 citation statements)

References 61 publications

(69 reference statements)

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“…1 roughly indicate the range of temperatures where the EW phase transition is taking place. Firstly, similar to the QCD phase transition, which was confirmed in various lattice QCD simulations, see for instance [12], this is a crossover. Secondly, while the QCD phase transition takes place within the temperature interval of a few tens MeV, the EW phase transition extends over temperature range of a few tens GeV.…”

Section: B Analytical Parameterization Of Eossupporting

confidence: 59%

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Equation of state for cosmological matter at and beyond QCD and electroweak eras

Tawfik

Mishustin

2019

J. Phys. G: Nucl. Part. Phys.

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Various thermodynamic quantities for baryon-free matter are calculated by combining the most reliable nonperturbative and perturbative calculations, especially the most recent ones including as many quark flavors as possible. We extend these calculations by including other degrees of freedom (dof), such as photons, neutrinos, leptons, electroweak particles, and Higgs bosons, that allows us to consider the temperatures up to the TeVscale. The calculations show that similar to QCD, the EW phase transition is also a crossover. We have found that while the equation of state for the hadronic matter is linear, p/ρ ≃ 0.2, the one for higher temperatures is rather complex; it exhibits two crossover-type phase transitions, corresponding to strong and EW matter.At even larger energy densities, the deduced EoS becomes linear again and close to ideal gas. The combined equation of state can be used for modeling the expansion of the Universe from very early times and through the EW and QCD era.

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Section: B Analytical Parameterization Of Eossupporting

confidence: 59%

“…they were partially quenched. Other lattice simulations have assumed that the four quarks are non-degenerate but have unphysical masses [11,12]. In addition to these attempts, perturbative calculations have been also conducted in [4].…”

Section: B Lattice Qcd Equation Of State In Non-perturbative Regimementioning

confidence: 99%

Equation of state for cosmological matter at and beyond QCD and electroweak eras

Tawfik

Mishustin

2019

J. Phys. G: Nucl. Part. Phys.

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“…At very large distances C bare P (β, N τ , r), C bare S (β, N τ , r) and W bare S (β, N τ , r) approach [L bare (β, N τ )] 2 in the infinite volume limit [8,15,65]. 1 These bare quantities contain ultraviolet (UV) divergences that are regularized on the lattice. The continuum limit requires looking for combinations of bare quantities that are free of UV divergences.…”

Section: Lattice Qcd Setup and Renormalizationmentioning

confidence: 99%

Color screening in ( 2+1 )-flavor QCD

et al. 2018

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We study correlation functions of spatially separated static quark-antiquark pairs in (2+1)-flavor QCD in order to investigate onset and nature of color screening at high temperatures. We perform lattice calculations in a wide temperature range, 140 ≤ T ≤ 5814 MeV, using the highly improved staggered quark action and several lattice spacings to control discretization effects. By comparing at high temperatures our lattice results to weak-coupling calculations as well as to the zero temperature result for the energy of a static quark-antiquark pair, we observe that color screening sets in at rT ≈ 0.3. Furthermore, we also observe that in the range 0.3 rT 0.6 weak-coupling calculations in the framework of suitable effective field theories provide an adequate picture of color screening.

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“…Our sources, and choices of fitting functions and fit ranges were presented in Ref. [3], so we simply present them without further discussion in Table 3.…”

Section: Correlator Masses and Amplitudesmentioning

confidence: 99%

Charmed and strange pseudoscalar meson decay constants from HISQ simulations

Bazavov¹,

Bérnard²,

Bouchard³

et al. 2014

Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013)

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We update our determinations of f D + , f D s , f K , and quark mass ratios from simulations with four flavors of HISQ dynamical quarks. The availability of ensembles with light quarks near their physical mass means that we can extract physical results with only small corrections for valence-and sea-quark mass mistunings instead of a chiral extrapolation. The adjusted valencequark masses and lattice spacings may be determined from an ensemble-by-ensemble analysis, and the results for the quark mass ratios then extrapolated to the continuum limit. Our central values of the charmed meson decay constants, however, come from an alternative analysis, which uses staggered chiral perturbation theory for the heavy-light mesons, and allows us to incorporate data at unphysical quark masses where statistical errors are often smaller. A jackknife analysis propagated through all of these steps takes account of the correlations among all the quantities used in the analysis. Systematic errors from the finite spatial size and EM effects are estimated by varying the parameters in the analysis, and systematic errors from the assumptions in the continuum extrapolation are estimated from the spread of values from different extrapolations.

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Finite Temperature ($\mu=0$)

Cited by 6 publications

References 61 publications

Equation of state for cosmological matter at and beyond QCD and electroweak eras

Equation of state for cosmological matter at and beyond QCD and electroweak eras

Color screening in ( 2+1 )-flavor QCD

Charmed and strange pseudoscalar meson decay constants from HISQ simulations

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