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Emergent inert adjoint scalar field in SU(2) YangMills thermodynamics due to coarsegrained topological fluctuation
(2011)

Ulrich Herbst
Ralf Hofmann
 We compute the phase and the modulus of an energy and pressurefree, composite, adjoint, and
inert field φ in an SU(2) YangMills theory at large temperatures. This field is physically relevant in describing part of the groundstate structure and the quasiparticle masses of excitations. The field φ possesses nontrivial S1winding on the group manifold S3. Even at asymptotically high temperatures, where the theory reaches its StefanBoltzmann limit, the field φ, though strongly power suppressed, is conceptually relevant: its presence resolves the infrared problem of thermal perturbation theory.