9 papers
Nonperturbative approach to(Wiener) functional integral with interaction
Juraj Bohacik, Peter Presnajder
We propose the another, in principe nonperturbative, method of the evaluation of the Wiener functional integral for term in the action. All infinite summations in the results…
Matrix models on the fuzzy sphere
Brian P. Dolan, Denjoe O'Connor, Peter Presnajder
Field theory on a fuzzy noncommutative sphere can be considered as a particular matrix approximation of field theory on the standard commutative sphere. We investigate from this po…
Field Theory on Noncommutative Space-Time and the Deformed Virasoro Algebra
M. Chaichian, A. Demichev, P. Presnajder
We consider a field theoretical model on the noncommutative cylinder which leads to a discrete-time evolution. Its Euclidean version is shown to be equivalent to a model on the com…
Festschrift to the 60th Birthday of J. Pisut
Stefan Olejnik, Peter Presnajder
This WWW page contains links to contributions that appear in the Festschrift issue of the journal Acta Physica Slovaca dedicated to Professor Jan Pisut on the occasion of his 60th…
Quantum Field Theory on Noncommutative Space-Times and the Persistence of Ultraviolet Divergences
M. Chaichian, A. Demichev, P. Presnajder
We study properties of a scalar quantum field theory on two-dimensional noncommutative space-times. Contrary to the common belief that noncommutativity of space-time would be a key…
A treatment of the Schwinger Model within Noncommutative Geometry
H. Grosse, P. Presnajder
A free spinor field on a noncommutative sphere is described starting from a canonical realization of the enveloping algebra U(u(2|1)). The gauge extension of the model - the Schwin…