Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/49761
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DC Field | Value | Language |
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dc.contributor.author | Von Smekal, L. | - |
dc.contributor.author | Ghiotti, M. | - |
dc.contributor.author | Williams, A. | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2008; 78(8):085016-1-085016-19 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.issn | 1550-2368 | - |
dc.identifier.uri | http://hdl.handle.net/2440/49761 | - |
dc.description.abstract | We present the Curci-Ferrari model on the lattice. In the massless case the topological interpretation of this model with its double Becchi-Rouet-Stora-Tyutin (BRST) symmetry relates to the Neuberger 0/0 problem which we extend to include the ghost/antighost symmetric formulation of the nonlinear-covariant Curci-Ferrari gauges on the lattice. The introduction of a Curci-Ferrari mass term, however, serves to regulate the 0/0 indeterminate form of physical observables observed by Neuberger. While such a mass m decontracts the double BRST/anti-BRST algebra, which is well known to result in a loss of unitarity, observables can be meaningfully defined in the limit m→0 via l’Hospital’s rule. At finite m, the topological nature of the partition function used as the gauge-fixing device seems lost. We discuss the gauge parameter ξ and mass m dependence of the model and show how both cancel when m≡m(ξ) is appropriately adjusted with ξ. | - |
dc.description.statementofresponsibility | von Smekal, L.; Ghiotti, M.and Williams, A. G. | - |
dc.language.iso | en | - |
dc.publisher | American Physical Soc | - |
dc.rights | ©2008 American Physical Society | - |
dc.source.uri | http://dx.doi.org/10.1103/physrevd.78.085016 | - |
dc.title | Decontracted double BRST symmetry on the lattice | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1103/PhysRevD.78.085016 | - |
dc.relation.grant | ARC | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Williams, A. [0000-0002-1472-1592] | - |
Appears in Collections: | Aurora harvest 5 Chemistry and Physics publications |
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hdl_49761.pdf | Published version | 382.38 kB | Adobe PDF | View/Open |
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