ICPAQGP-2010

5-10 December 2010

6th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2010)

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The gluon condensates and the QGP equation of state

Content:

From the heavy ion collisions performed at RHIC we have strong evidence of the formation of a hot, dense, deconfined and strongly interacting system: the sQGP. This is in sharp contrast with a weakly interacting gas of quarks and gluons, described by perturbative QCD. In fact, above the deconfining phase transition the system still has non-perturbative interactions. For astrophysical applications and also to understand heavy ion collisions we need to know the equation of state (EOS) of the sQGP. This EOS must be employed in hydrodynamical simulations of the sQGP evolution. In this work we derive a simple EOS for the sQGP at zero temperature with non-perturbative interactions driven by the dimension 2 and 4 gluon condensates. We start with the QCD lagrangian and perform a separation of the gluon field in soft (low momentum) and hard (high momentum) modes. The soft fields will give origin to the condensates and for the hard fields we make a mean-field approximation, similar to the one used in the Walecka model. We compare the obtained results with the MIT EOS.

Id:

Place:

Room: Main Auditorium

Starting date:

--not yet scheduled--

Duration:

00'

Primary Authors:

Dr. NAVARRA, FERNANDO (INSTITUTE OF PHYSICS/ UNIVERSITY OF SAO PAULO / BRAZIL)

Co-Authors:

FOGACA, Davvid (NSTITUTE OF PHYSICS/ UNIVERSITY OF SAO PAULO / BRAZIL)

Presenters:

Dr. NAVARRA, FERNANDO