119 citations · 262 across the 11 of their papers we have counts for
11 papers
Revisiting the electronic properties of dislocated graphene sheets
Nicolás Fernández, Pierre Pujol, Mario Solís +1
The interplay between topological defects, such as dislocations or disclinations, and the electronic degrees of freedom in graphene has been extensively studied. In the literature,…
A note on the arrow of time in nonminimally coupled scalar field FRW cosmology
L. León Andonayre, M. Skugoreva, A. Toporensky +1
We revisit the cyclic Universe scenario in scalar field FRW cosmology and check its applicability for a nonminimally coupled scalar field. We show that for the most popular case of…
Ponzano-Regge Model on Manifold with Torsion
T Vargas
The connection between angular momentum in quantum mechanics and geometric objects is extended to manifold with torsion. First, we notice the relation between the symbol and R…
On the energy of homogeneous cosmologies
James M. Nester, Lau Loi So, T. Vargas
An energy for the homogeneous cosmological models is presented. More specifically, using an appropriate natural prescription, we find the energy within any region with any gravitat…
Orbifolds, Quantum Cosmology, and Nontrivial Topology
Helio V. Fagundes, Teofilo Vargas
In order to include nontrivial spatial topologies in the problem of quantum creation of a universe, it seems to be necessary to generalize the sum over compact, smooth 4-manifolds…
The Energy of Bianchi Type I and II Universes in Teleparallel Gravity
Lau Loi So, T. Vargas
For certain models, the energy of the universe which includes the energy of both the matter and the gravitational fields is obtained by using the quasilocal energy-momentum in tele…