Physics of the Quark-Gluon Plasma

Summer school

Quantum fields in and out of equilibrium

Bielefeld September 23, 2003

Jean-Paul Blaizot SPhT-Saclay

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QCD and its phase-diagram

Quantum fields at finite temperature(and finite density)

Thermodynamics of the scalar field

Perturbation theory at high temperature

Quantum ChromoDynamics

Non linear effects become important when

Long wavelength thermal fluctuations

Breakdown of thermal perturbation theory