2005/04/30 by Antti J. Niemi, Niels R. Walet · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.supr-con #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.72.054007
published as Phys.Rev. D72 (2005) 054007 · Improved discussion of magnetic nature of phases; removed unsubstantiated speculation about color confinement
arxiv created 2005/08/22 · openalex publication_date 2005/09/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the strongly correlated environment of high-temperature cuprate superconductors, the spin and charge degrees of freedom of an electron seem to separate from each other. A similar phenomenon may be present in the strong coupling phase of Yang-Mills theories, where a separation between the color charge and the spin of a gluon could play a role in a mass-gap formation. Here we study the phase structure of a decomposed SU(2) Yang-Mills theory in a mean-field approximation, by inspecting quantum fluctuations in the condensate which is formed by the color-charge component of the gluon field. Our results suggest that the decomposed theory has an involved phase structure. In particular, there appears to be a phase which is quite reminiscent of the superconducting phase in cuprates. We also find evidence that this phase is separated from the asymptotically-free theory by an intermediate pseudogap phase.