Auflistung nach Schlagwort "Non-commutative"

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  • Divergences in QFT on the Noncommutative Minkowski space with Grosse-Wulkenhaar potential 
    Zahn, Jochen (Trieste : International School for Advanced Studies, 2010)
    We study quantum field theory on the two-dimensional Noncommutative Minkoswki space with a Grosse-Wulkenhaar potential. We explicitly construct the retarded propagator and show that it is not a tempered distribution. This ...
  • Noncommutative baby Skyrmions 
    Ioannidou, Theodora; Lechtenfeld, Olaf (Trieste : International School for Advanced Studies, 2010)
    A class of exact analytic noncommutative baby Skyrmions is obtained. The corresponding configurations have singular commutative limit but are stable against scaling due to the noncommutativity. We compute their energies, ...
  • Noncommutative baby Skyrmions 
    Ioannidou, Theodora; Lechtenfeld, Olaf (Amsterdam : Elsevier, 2009)
    We subject the baby Skyrme model to a Moyal deformation, for unitary or Grassmannian target spaces and without a potential term. In the Abelian case, the radial BPS configurations of the ordinary noncommutative sigma model ...
  • Noncommutative deformation of the Ward metric 
    Goffeng, Magnus; Lechtenfeld, Olaf (Trieste : International School for Advanced Studies, 2011)
    The moduli-space metric in the static non-Abelian charge-two sector of the Moyal-deformed CP1 sigma model in 1+2 dimensions is analyzed. After recalling the commutative results of Ward and Ruback and the ?-regularized ...
  • Noncommutative instantons and solitons 
    Lechtenfeld, Olaf (Trieste : Sissa Medialab Srl, 2003)
    I explain how to construct noncommutative BPS configurations in four and lower dimensions by solving linear matrix equations. Examples are instantons in D=4 Yang-Mills, monopoles in D=3 Yang-Mills-Higgs, and (moving) ...