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SUMMARY:Kinetics and hydrodynamics close to the chiral limit
DTSTART;VALUE=DATE-TIME:20191104T094000Z
DTEND;VALUE=DATE-TIME:20191104T100000Z
DTSTAMP;VALUE=DATE-TIME:20200607T005007Z
UID:indico-contribution-3557719@indico.cern.ch
DESCRIPTION:Speakers: Derek Teaney (Stony Brook University)\nFirst\, we re
call that close to the chiral limit\, and below the critical temperature\,
the long wavelength effective theory of QCD is not ordinary hydrodynamics
\, but SU(2)xSU(2) superfluid hydrodynamics (Son 2000). In this theory the
usual hydrodynamic variables such as energy are momentum are augmented by
long wavelength pions. When the pion is massive\, the effective theory r
educes to normal hydrodynamics at large distances\, but is described by th
e superfluid theory at short distances. Using techniques developed by Akam
atsu et al (Akamatsu 2017)\, we integrate out the superfluid modes to dete
rmine how the transport coefficients of QCD such as the bulk viscosity dep
end on the pion mass below the critical temperature. These expressions are
given by the dissipative parameters in the superfluid theory. We show h
ow to compute these parameters in chiral perturbation theory using the ass
ociated chiral kinetic theory.\n\nReferences:\n\nD. Son\, ``Hydrodynamics
of nuclear matter in the chiral limit\,'' Phys. Rev. Lett. 84\, 3771 (20
00).\n\nY. Akamatsu\, A. Mazeliauskas and D. Teaney\, ``A kinetic regime o
f hydrodynamic fluctuations and long time tails for a Bjorken expansion\,'
' Phys.\\ Rev. C95\, no. 1\, 014909 (2017).\n\nhttps://indico.cern.ch/eve
nt/792436/contributions/3557719/
LOCATION:Wanda Han Show Theatre & Wanda Reign Wuhan Hotel
URL:https://indico.cern.ch/event/792436/contributions/3557719/
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