Thermal Versus Vacuum Magnetization in QED

Abstract

The magnetized relativistic Fermi and Bose gases are studied at finite temperature and density.In the case of the Fermi gas, the contribution to the magnetization from the vacuum becomes dominant for high magnetic fields, when the thermal contribution saturates. In the case of the charged Bose gas, the (paramagnetic) vacuum--magnetization becomes dominant when the gas changes from a diamagnetic to a paramagnetic behaviour. We furthermore find that the scalar--QED effective coupling constant for a weak non--zero external magnetic field is a decreasing function of the temperature.

8 pages. Göteborg ITP 94-13

References in corpus (5)

• Gamma-Ray Bursts as the Death Throes of Massive Binary Stars
• QED effective action at finite temperature and density
• Real-Time Thermal Propagators and the QED Effective Action for an External Magnetic Field
• Condensation and Magnetization of the Relativistic Bose Gas
• Nonlinear interaction between electromagnetic fields at high temperature

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• On the Theory of Casimir-Polder Forces
• Nonperturbative QED Effective Action at Finite Temperature
• Magnetic Field Effect in the Fine-Structure Constant and Electron Dynamical Mass
• Effective Electromagnetic Lagrangian at Finite Temperature and Density in the Electroweak Model
• Boundary conditions and electromagnetic effects on the phase transition of a zero spin bosonic system