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7 papers · 1 filter
Spherically Symmetric Noncommutative Space: d = 4
Maja Buric, John Madore
In order to find a noncommutative analog of Schwarzschild or Schhwarzschild-de Sitter blackhole we investigate spherically symmetric spaces generated by four noncommutative coordin…
Dynamical noncommutativity and Noether theorem in twisted phi^*4 theory
Paolo Aschieri, Leonardo Castellani, Marija Dimitrijevic
A \star-product is defined via a set of commuting vector fields X_a = e_a^μ(x) \partial_μ, and used in a phi^*4 theory coupled to the e_a^μ(x) fields. The \star-product is dynamica…
The absence of the 4 divergence in noncommutative chiral models
M. Buric, D. Latas, V. Radovanovic +1
In this paper we show that in the noncommutative chiral gauge theories the 4-fermion vertices are finite. The -vertices appear in linear order in quantization of the -expand…
The Energy-momentum of a Poisson structure
M. Buric, J. Madore, G. Zoupanos
Consider the quasi-commutative approximation to a noncommutative geometry. It is shown that there is a natural map from the resulting Poisson structure to the Riemann curvature of…
Non-commutative SU(N) gauge theories and asymptotic freedom
Dusko Latas, Voja Radovanovic, Josip Trampetic
In this paper we analyze the one-loop renormalization of the -expanded Yang-Mills theory. We show that the {\it freedom parameter} , key to renormalization, origi…
A Gravity Theory on Noncommutative Spaces
Paolo Aschieri, Christian Blohmann, Marija Dimitrijevic +3
A deformation of the algebra of diffeomorphisms is constructed for canonically deformed spaces with constant deformation parameter theta. The algebraic relations remain the same, w…