From condensed matter to QCD: a journey through gauge theories on board of a variational tool

2017/01/01 by Fabio Siringo, Siringo, Fabio
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.48550/arxiv.1701.00286

openalex publication_date 2017/01/01 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28

Abstract

Starting with a review of the thermal fluctuations in superconductors, the Gaussian Effective Potential is shown to be a powerful variational tool for the study of the breaking of symmetry in gauge theories. A novel re-derivation of the massive expansion for QCD is presented, showing its variational nature and its origin from the Gaussian potential that also provides a variational proof for chiral symmetry breaking and dynamical generation of a gluon mass.

Related

• Gaussian Effective Potential and superconductivity
• Variational calculations in gauge theories with approximate projection on gauge invariant states
• Mass generation and deconfinement in pure Yang-Mills theory: a variational study
• Effective gluon potential and Yang-Mills thermodynamics
• Linking Dynamical Gluon Mass to Chiral Symmetry Breaking via a QCD Low Energy Effective Field Theory