Lattice Landau gauge with stochastic quantisation

• Verfasst von: Pawlowski, Jan M. [VerfasserIn]
• Verfasst von: Spielmann, Daniel [VerfasserIn]
• Verfasst von: Stamatescu, Ion-Olimpiu [VerfasserIn]
• Titel: Lattice Landau gauge with stochastic quantisation
• Verf.angabe: Jan M. Pawlowski, Daniel Spielmann, Ion-Olimpiu Stamatescu
• Umfang: 24 S.
• Fussnoten: Gesehen am 05.12.2017
• Titel Quelle: Enthalten in: Nuclear physics <Amsterdam> / B
• Jahr Quelle: 2010
• Band/Heft Quelle: 830(2010), 1, S. 291-314
• ISSN Quelle: 1873-1562
• DOI: doi:10.1016/j.nuclphysb.2009.12.036
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1566023963

Abstract

We calculate Landau gauge ghost and gluon propagators in pure SU(2) lattice gauge theory in two, three and four dimensions. The gauge fixing method we use, sc. stochastic quantisation, serves as a viable alternative approach to standard gauge fixing algorithms. We also investigate the spectrum of the Faddeev-Popov operator. At insufficiently accurate gauge fixing, we find evidence that stochastic quantisation samples configurations close to the Gribov horizon. Standard gauge fixing does so only at specific parameters; otherwise, there is a clear difference. However, this difference disappears if the gauge is fixed to sufficient accuracy. In this case, we confirm previous lattice results for the gluon and ghost propagator in two, three and four dimensions.