Speaker
Matteo Buzzegoli
(FI)
Description
The quark-gluon plasma created in heavy ion collisions can be described as a
relativistic fluid with high values of acceleration and vorticity and, in such
extreme local equilibrium conditions, the standard hydrodynamic equations are
expected to receive corrections from the non-ideal non-dissipative terms of the
stress-energy tensor.
We show how these corrections can be obtained in a systematical way by
performing a perturbative expansion around the homogeneous global equilibrium
condition for small values of acceleration and vorticity. The final outcome is
that the thermodynamic coefficients associated with these corrections can be
expressed in term of euclidean correlators of the stress-energy tensor operator
and the generators of the Lorentz group.
These correlators can in principle be estimated nonperturbatively by lattice
QCD techniques and we will present the analytic results that can be obtained in
two cases: a free scalar charged field and a free Dirac field, both massive
and massless.
Primary authors
Mr
Eduardo Grossi
(University of Florence & INFN Florence)
Matteo Buzzegoli
(FI)
Co-author
Francesco Becattini
(FI)
