Cumulative effects of collision integral, strong magnetic field, and quasiparticle description on charge and heat transport in thermal QCD medium

Abstract

Our first aim is to explore the effect of the collision integral with the insurance of instantaneous conservation of particle number on charge and heat transport in a thermal QCD medium. The second aim is to see how the dimensional reduction due to strong magnetic field (B) modulates the transport through the entangled effects, {\em such as} collision-time and occupation probability etc. in collision integral. The final aim is to check how the quasiparticle description through dispersion relation of thermal QCD in strong B, alters the aforesaid conclusions. We observe that modified collision term expedites both transport, which is manifested by large magnitudes of electrical (${\sigma }_{\mathrm{el}}$) and thermal ($\kappa$) conductivities, in comparison to relaxation-collision term. As a corollary, Lorenz number is dominated by the later and Knudsen number is by the former. However, strong B not only flips the dominance of collision term in heat transport, it also causes drastic enhancement of both ${\sigma }_{\mathrm{el}}$ and $\kappa$ and reduction in specific heat. As a result, the equilibration factor, Knudsen number becomes much larger than one, which defies physical interpretation. Finally, quasiparticle description in the absence of strong B impedes the transport of charge and heat, resulting in the meagre decrease of conductivities, however, strong B does noticeable observations: conductivities now gets reduced to physically plausible values, T-dependence of ${\sigma }_{\mathrm{el}}$ gets reversed, {\em i.e.} it now decreases with T, effect of collision integral gets smeared in $\kappa$ etc. Knudsen number thus becomes much smaller than one, implying that the system be remained in equilibrium. These findings attribute to the fact that the collective modes in the dispersion relation of thermal QCD in strong B sets in much larger scale, manifested by large in-medium masses.

arXiv comment35 pages, 12 figures

References in corpus (51)

• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Estimate of the magnetic field strength in heavy-ion collisions
• Chiral effective model with the Polyakov loop
• Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
• Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene
• The Chiral Magnetic Effect and Anomaly-Induced Transport
• "Strongly interacting matter in magnetic fields": an overview
• Magnetohydrodynamics, charged currents and directed flow in heavy ion collisions
• Testing the chiral magnetic and chiral vortical effects in heavy ion collisions
• Hadron Production in Ultra-relativistic Nuclear Collisions: Quarkyonic Matter and a Triple Point in the Phase Diagram of QCD
• Susceptibilities and speed of sound from PNJL model
• Magnetic-Field-Induced insulator-conductor transition in SU(2) quenched lattice gauge theory
• Conformal anomaly as a source of soft photons in heavy ion collisions
• From QCD lattice calculations to the equation of state of quark matter
• A condensed matter realization of the axial magnetic effect
• Chiral Symmetry Breaking in a Uniform External Magnetic Field
• Particle Ratios, Equilibration, and the QCD Phase Boundary
• Electrical Conductivity of Quark-Gluon Plasma in Strong Magnetic Fields
• Properties of neutral mesons in a hot and magnetized quark matter
• The weak-field expansion for processes in a homogeneous background magnetic field
• Longitudinal Conductivity in Strong Magnetic Field in Perturbative QCD: Complete Leading Order
• Weak decay constant of neutral pions in a hot and magnetized quark matter
• A model of the effect of collisions on QCD plasma instabilities
• Electromagnetic spectral properties and Debye screening of a strongly magnetized hot medium
• Dynamical quark mass generation in a strong external magnetic field
• Electric conductivity of hot and dense quark matter in a magnetic field with Landau level resummation via kinetic equations
• Effective description of hot QCD medium in strong magnetic field and longitudinal conductivity
• Massless Mode and Positivity Violation in Hot QCD
• Anisotropic pressure of deconfined QCD matter in presence of strong magnetic field within one-loop approximation
• Transport coefficients of hot magnetized QCD matter beyond the lowest Landau level approximation
• Single parameter quasi-particle model for QGP
• Transport coefficients of a hot QCD medium and their relative significance in heavy-ion collisions
• Gauge dynamics in the PNJL model: Color neutrality and Casimir scaling
• Chiral Symmetry Breaking in QED in a Magnetic Field at Finite Temperature
• Magnetic contribution to dilepton production in heavy-ion collisions
• Dilepton production rate in a hot and magnetized quark-gluon plasma
• Chiral Hall Effect and Chiral Electric Waves
• Finite temperature quark-gluon vertex with a magnetic field in the Hard Thermal Loop approximation
• Electrical conductivity of quark matter at finite T under external magnetic field
• Temperature dependence of the axial magnetic effect in two-color quenched QCD
• Revisit to electrical and thermal conductivities, Lorenz number and Knudsen number in thermal QCD in a strong magnetic field
• Breakdown of the Wiedemann-Franz law in a unitary Fermi gas
• Nonlinear electromagnetic response in quark-gluon plasma
• One-loop QCD thermodynamics in a strong homogeneous and static magnetic field
• Transport coefficients of the Gribov-Zwanziger plasma
• Transport coefficients of two-flavor quark matter from the Kubo formalism
• Effect of magnetic field on the charge and thermal transport properties of hot and dense QCD matter
• Magnetized plasminos in cold and hot QED plasmas
• Giant Enhancement of the Thermo-Particle Transport Figure of Merit and Breakdown of the Wiedemann-Franz Law in Unitary Fermi Gases
• Violation of Wiedemann-Franz Law for Hot Hadronic Matter created at NICA, FAIR and RHIC Energies using Non-extensive Statistics

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