Gauge invariance and vacuum energies of non-Abelian string-configurations

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dc.contributor.authorWeigel H.
dc.contributor.authorQuandt M.
dc.date.accessioned2011-05-15T16:02:11Z
dc.date.available2011-05-15T16:02:11Z
dc.date.issued2010
dc.description.abstractWe improve on a method to compute the fermion contribution to the vacuum polarization energy of string-like configurations in a non-Abelian gauge theory. We establish the new method by numerically verifying the invariance under (a subset of) local gauge transformations. This also provides further support for the use of spectral methods to compute vacuum polarization energies in general. We confirm that the vacuum energy in the over(MS, -) renormalization scheme is tiny as compared to the mass of the fluctuating fermion field. Numerical results for the physical on-shell scheme are also presented. © 2010 Elsevier B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.identifier.citation690
dc.identifier.citation5
dc.identifier.issn3702693
dc.identifier.other10.1016/j.physletb.2010.05.070
dc.identifier.urihttp://hdl.handle.net/10019.1/12353
dc.titleGauge invariance and vacuum energies of non-Abelian string-configurations
dc.typeArticle
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