  Here we present a self-consistent quasi-particle model for quark-gluon plasma
and apply it to explain the non-ideal behaviour seen in lattice simulations.
The basic idea, borrowed from electrodynamic plasma, is that the gluons acquire
mass as it propagates through plasma due to collective effects and is
approximately equal to the plasma frequency. The statistical mechanics and
thermodynamics of such a system is studied by treating it as an ideal gas of
massive gluons. Since mass or plasma frequency depends on density, which itself
is a thermodynamic quantity, the whole problem need to be solved
self-consistently.
