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SUMMARY:Momentum transport coefficients with chiral dependent quark masses
  in thermal QCD medium
DTSTART;VALUE=DATE-TIME:20230207T114000Z
DTEND;VALUE=DATE-TIME:20230207T115500Z
DTSTAMP;VALUE=DATE-TIME:20261012T030842Z
UID:indico-contribution-856@events.vecc.gov.in
DESCRIPTION:Speakers: Pushpa Panday (Indian Institute of Technology Roorke
 e)\nWe have studied the momentum transport coefficients\, viz. shear and b
 ulk viscosity\, in a weakly magnetized ($eB\\ll T^2$) deconfined thermal Q
 CD medium at finite quark chemical potential ($\\mu$). The magnetic field 
 generates anisotropy in the medium\, causing the previously isotropic scal
 ar transport coefficients to become anisotropic and separate into several 
 components. Depending upon the direction of the magnetic field and current
 \, we can have three possible components\, namely\, longitudinal\, transve
 rse\, and Hall.\nWe have obtained five shear ($\\eta_0\,\\eta_1\,\\eta_2\,
 \\eta_3$ and $\\eta_4$) and two bulk viscous components ($\\zeta_0$ and $\
 \zeta_1$) using relativistic Boltzmann transport equation under relaxation
  time approximation. Interaction among partons is incorporated through the
  quasiparticle mass of quarks and gluons ($T$\, $\\mu$\, $B$ dependent)\, 
 calculated using one-loop perturbative thermal QCD.\n \n \n  It is observe
 d that the magnetic field acts differently on left (L) and right (R)-hande
 d chiral modes of quark. This leads to the lifting of degeneracy in mass o
 f those modes\, in contrast to the strong magnetic field case ($eB>>T^2$)\
 , where the modes are degenerate. The magnetic field dependence of L and R
  modes of $\\eta_0\, \\eta_1$ and $\\eta_3$ is opposite in nature\, viz. t
 he L mode magnitude decreases whereas the R mode magnitude increases\, wit
 h the magnetic field. This is in contrast to $\\eta_2$ and $\\eta_4$\, for
  which\, both the L and R mode magnitudes increase with the magnetic field
 . The L modes of both $\\zeta_0$ and $\\zeta_1$ show an increment with mag
 netic field for the entire temperature range.  For the R mode\, up to $T \
 \sim 0.35 \\mathrm{GeV}$\, the magnitude at $e B=0.2 m_\\pi^2$ is greater 
 than at $e B=0.1 m_\\pi^2$\; beyond $T \\sim 0.35 \\mathrm{GeV}$\, the mag
 nitude at $e B=0.1 m_\\pi^2$ becomes greater than that at $e B=0.2 m_\\pi^
 2$. Also\, these shear and bulk viscosities get amplified with quark chemi
 cal potential for both modes. Additionally\, we have also examined the eff
 ects of\nthe magnetic field on specific shear and bulk viscosities\, Prand
 tl number\, and Reynolds number for L and R modes over a given temperature
  range.\n\nhttps://events.vecc.gov.in/event/19/contributions/856/
LOCATION:Hall 1 (Sapphire)
URL:https://events.vecc.gov.in/event/19/contributions/856/
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