Asymptotic Freedom and Compositeness

Details Asymptotic Freedom and Compositeness Asymptotic Freedom and Compositeness

2004-11-23

arxiv.org/abs/hep-th/0411214v4

ISRN High Energy Physics, vol. 2012, Article ID 373121 (2012)

Physics

High Energy Physics

High Energy Physics - Theory

version 4: slight changes in text, change of title

Scientific paper

We compute the phase and the modulus of an energy- and pressure-free, composite, adjoint, and inert field $\phi$ in an SU(2) Yang-Mills theory at large temperatures. This field is physically relevant in describing part of the ground-state structure and the quasiparticle masses of excitations. The field $\phi$ possesses nontrivial $S^1$-winding on the group manifold $S^3$. Even at asymptotically high temperatures, where the theory reaches its Stefan-Boltzmann limit, the field $\phi$, though strongly power-suppressed, is conceptually relevant: its presence resolves the infrared problem of thermal perturbation theory.

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