I.F.T.
Almuerzo-Seminario
(Lunch seminar)
November 30th 1999, 14:00 p.m.
Nonequilibrium Chiral Perturbation Theory and Disoriented Chiral
Condensates
A. Gómez Nicola
U. Complutense de Madrid
We propose an extension of Chiral Perturbation Theory to describe a
meson gas out of thermal equilibrium. The pion decay constant becomes a
time-dependent function and a useful connection with a QFT in a curved
space-time allows to establish consistently renormalisation and
power counting. We discuss the applicability of our approach to study the
dynamics of the plasma formed after a Relativistic Heavy Ion
Collision. In particular, Disoriented Chiral Condensates (regions of
misaligned vacuum formed during the chiral phase transition) can be
accommodated within our description, via the parametric resonance mechanism
(similarly to the inflationary reheating scenario) as long as they
arise in the late stage of the plasma expansion.
The almuerzo-seminario is
intended to be an informal seminar and an open forum for discussion.
You are wellcome to bring your own
bocata (sandwich), or coffee or tea.
Where: Modulo C-XVI, 3rd floor,
Facultad de Ciencias U.A.M., C.U. Cantoblanco, 28049-Madrid
For more information about seminars at the I.F.T. e-mail
José Ramón Espinosa
or phone +34-91-397 4418.
Last modified: Fri Nov 5 08:34:03 CET 1999