4 papers
Dark energy and matter from a five-dimensional Chern-Simons cosmology
Luis F. Urrutia
A Friedman-Robertson-Walker cosmology arising from a five-dimensional Chern-Simons (CS) theory for the group S0(1,5) coupled to matter is considered as an alternative model for dar…
Hamiltonian Solution of the Schwinger Model with Compact U(1)
Román Linares, Luis F. Urrutia, J. David Vergara
The complete exact solution of the Schwinger model with compact gauge group U(1), in the Hamiltonian approach, is presented . The compactification is imposed by demanding that the…
Matrix elements of the plaquette operator of Lattice Gauge Theory
G. Burgio, R. De Pietri, H. A. Morales-Tecotl +2
We show that in the spin-network basis it is possible to compute the matrix elements of any given operator of the Hamiltonian formulation of Lattice Gauge Theory (LGT). We give the…
Berezin integration on noncompact supermanifolds
J. Alfaro, L. F. Urrutia
An heuristic derivation of the tranformation law for the Berezin integration measure in noncompact supermanifolds, obtained by Roshstein \cite{Ro}, is presented.