Shear and bulk viscosity of quark-gluon plasma with Gribov gluons and quasiparticle quarks
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| Format: | Preprint |
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2024
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| _version_ | 1866929652681932800 |
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| author | Madni, Sadaf Mukherjee, Arghya Jaiswal, Amaresh Haque, Najmul |
| author_facet | Madni, Sadaf Mukherjee, Arghya Jaiswal, Amaresh Haque, Najmul |
| contents | In this study, we analyze the transport properties of the Quark-Gluon Plasma, focusing on bulk ($ζ$) and shear ($η$) viscosities at vanishing chemical potential. To describe the QGP, we employ a quasiparticle model for quarks along with Gribov's prescription for gluons, which effectively captures non-perturbative dynamics. The Gribov parameter $γ_G$ and the dynamical mass $m_g$ are obtained by solving the one-loop gap equation in the $\overline{\text{MS}}$ renormalization scheme and further using lattice QCD data for the equation of state (EoS) of pure gluonic matter. The interaction between quarks and gluons is reflected in the quark quasi-mass $m_q$, again obtained using lattice EoS data for (2+1)-flavor QCD. Our primary goal is to invertigate the influence of quasi-quarks on the transport coefficients of QGP. Interestingly, we find a substantial decrease in the scaled transport coefficients with rising temperatures within the range ($1 \le T/T_c \le 3.5$). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08384 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Shear and bulk viscosity of quark-gluon plasma with Gribov gluons and quasiparticle quarks Madni, Sadaf Mukherjee, Arghya Jaiswal, Amaresh Haque, Najmul High Energy Physics - Phenomenology In this study, we analyze the transport properties of the Quark-Gluon Plasma, focusing on bulk ($ζ$) and shear ($η$) viscosities at vanishing chemical potential. To describe the QGP, we employ a quasiparticle model for quarks along with Gribov's prescription for gluons, which effectively captures non-perturbative dynamics. The Gribov parameter $γ_G$ and the dynamical mass $m_g$ are obtained by solving the one-loop gap equation in the $\overline{\text{MS}}$ renormalization scheme and further using lattice QCD data for the equation of state (EoS) of pure gluonic matter. The interaction between quarks and gluons is reflected in the quark quasi-mass $m_q$, again obtained using lattice EoS data for (2+1)-flavor QCD. Our primary goal is to invertigate the influence of quasi-quarks on the transport coefficients of QGP. Interestingly, we find a substantial decrease in the scaled transport coefficients with rising temperatures within the range ($1 \le T/T_c \le 3.5$). |
| title | Shear and bulk viscosity of quark-gluon plasma with Gribov gluons and quasiparticle quarks |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2401.08384 |