Thermodynamics of a quark-gluon plasma at finite baryon density

Khaidukov, Z. V.; Simonov, Yu. A.

doi:10.1103/physrevd.100.076009

Cited by 16 publications

(12 citation statements)

References 110 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although one cannot exclude finite temperature or finite N t effects, the temperature in our simulations is close to zero. When we divide some observable by T in the corresponding power (similar to formulae (8)(9) or (15)(16)(17) ), instead of T we imply inverse temporal size of our lattice 1/aN t 140 MeV.…”

Section: Details Of the Calculationmentioning

confidence: 99%

“…Numerous lattice attempts to overcome the sign problem provide reliable information only in the region of small baryon density [2]. In the absence of straightforward results from lattice simulation of QCD, one applies different analytical approaches to study the (µ, T ) phase diagram: mean field approaches [3][4][5][6][7][8][9], the method of Dyson-Schwinger equations and the renormalization group [10][11][12][13], the large-N c approach [14], perturbative QCD [15,16] and others. Although the results obtained theoretically are important, it is rather difficult to estimate the reliability of these predictions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lattice study of thermodynamic properties of dense QC$_2$D

Astrakhantsev,

Braguta,

Ilgenfritz

et al. 2020

Preprint

View full text Add to dashboard Cite

In this paper we study thermodynamic properties of dense cold SU (2) QCD within lattice simulation with dynamical rooted staggered quarks which in the continuum limit correspond to N f = 2 quark flavours. We calculate baryon density, renormalized chiral and diquark condensates for various baryon chemical potentials in the region µ ∈ (0, 2000) MeV. It is found, that in the region µ ∈ (0, 540) MeV the system is well described by the ChPT predictions. In the region µ > 540 MeV the system becomes sufficiently dense and ChPT is no longer applicable to describe lattice data. For chemical potentials µ > 900 MeV we observe formation of the Fermi sphere, and the system is similar to the one described by the Bardeen-Cooper-Schrieffer theory where the the diquarks play a role of Cooper pairs. In order to study how nonzero baryon density influences the gluon background we calculate chromoelectric and chromomagnetic fields, as well as the topological susceptibility. We find that the chromoelectric field and the topological susceptibility decrease, whereas the chromomagnetic field increases with rising of baryon chemical potential. Finally we study the equation of state of dense two-color quark matter.

show abstract

Section: Details Of the Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lattice study of thermodynamic properties of dense QC$_2$D

Astrakhantsev,

Braguta,

Ilgenfritz

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Numerous lattice attempts to overcome the sign problem provide reliable information only in the region of small baryon density [2]. In the absence of straightforward results from lattice simulation of QCD, one applies different analytical approaches to study the ðμ; TÞ phase diagram: mean field approaches [3][4][5][6][7][8][9], the method of Dyson-Schwinger equations and the renormalization group [10][11][12][13], the large-N c approach [14], perturbative QCD [15,16] and others. Although the results obtained theoretically are important, it is rather difficult to estimate the reliability of these predictions.…”

Section: Introductionmentioning

confidence: 99%

Lattice study of thermodynamic properties of dense QC2D

et al. 2020

View full text Add to dashboard Cite

In this paper we study thermodynamic properties of dense cold SUð2Þ QCD within lattice simulation with dynamical rooted staggered quarks which in the continuum limit correspond to N f ¼ 2 quark flavours. We calculate baryon density, renormalized chiral and diquark condensates for various baryon chemical potentials in the region μ ∈ ð0; 2000Þ MeV. It is found that in the region μ ∈ ð0; 540Þ MeV the system is well described by the ChPT predictions. In the region μ > 540 MeV the system becomes sufficiently dense and ChPT is no longer applicable to describe lattice data. For chemical potentials μ > 900 MeV we observe formation of the Fermi sphere, and the system is similar to the one described by the Bardeen-Cooper-Schrieffer theory where the diquarks play a role of Cooper pairs. In order to study how nonzero baryon density influences the gluon background we calculate chromoelectric and chromomagnetic fields, as well as the topological susceptibility. We find that the chromoelectric field and the topological susceptibility decrease, whereas the chromomagnetic field increases with rising of baryon chemical potential. Finally we study the equation of state of dense two-color quark matter.

show abstract

“…We computed thermodynamic quantities of QGP with u-, d-, s-quarks by means of corresponding series partial summation. The np inputs V 1 (∞, T ) and m D (T ) are identical to these of [65]. They were adjusted in such a way that QGP pressure (9) at zero m.f.…”

Section: Numerical Analysis Of the Resultsmentioning

confidence: 99%

“…In addition, the sound speed in QGP at zero and nonzero density was determined in [63] and [64], respectively. For a summary of FCM results at nonzero density see [65].…”

Section: Introductionmentioning

confidence: 99%

Dense quark–gluon plasma in strong magnetic fields

et al. 2019

View full text Add to dashboard Cite

A non-perturbative (np) method of Field correlators (FCM) was applied to study QCD at temperatures above the deconfinement transition (1 < T /T c < 3, T c ∼ 0.16 GeV) and nonzero baryon densities (baryon chemical potential μ B < 0.5 GeV) in an external uniform magnetic field (eB < 0.5 GeV 2 ). Within FCM, the np hightemperature dynamics is embodied in the Polyakov loop and in the Debye mass due to the Color-Magnetic confinement. Analytic expressions for quark pressure and magnetic susceptibility were obtained. The expressions were represented as series and in integral form. Magnetic susceptibility was found to increase rapidly with temperature and slowly with density. The results at the zero density limit are in agreement with lattice data.

show abstract

Thermodynamics of a quark-gluon plasma at finite baryon density

Cited by 16 publications

References 110 publications

Lattice study of thermodynamic properties of dense QC$_2$D

Lattice study of thermodynamic properties of dense QC$_2$D

Lattice study of thermodynamic properties of dense QC2D

Dense quark–gluon plasma in strong magnetic fields

Contact Info

Product

Resources

About