The unmasking of thermal Goldstone bosons

Abstract

The problem of extracting the modes of Goldstone bosons from a thermal background is reconsidered in the framework of relativistic quantum field theory. It is shown that in the case of spontaneous breakdown of an internal bosonic symmetry a recently established decomposition of thermal correlation functions contains certain specific contributions which can be attributed to a particle of zero mass.

7 pages, LaTeX; new and considerably strengthened results after Eq. (14); to appear in Phys. Rev. D

References in corpus (1)

• Towards a Relativistic KMS Condition

Cited by in corpus (9)

• Construction of KMS States in Perturbative QFT and Renormalized Hamiltonian Dynamics
• Axiomatic Analyticity Properties and Representations of Particles in Thermal Quantum Field Theory
• Asymptotic dynamics of thermal quantum fields
• Fluctuation Operators and Spontaneous Symmetry Breaking
• Spontaneous Symmetry Breaking of Lorentz and (Galilei) Boosts in (Relativistic) Many-Body Systems
• Nambu-Goldstone mechanism at finite temperature in the imaginary-time and real-time formalism
• Goldstone bosons at non-zero temperature
• Goldstone bosons across thermal phase transitions
• A Goldstone Theorem in Thermal Relativistic Quantum Field Theory