6 papers
Can the cosmological constant undergo abrupt changes?
Alejandro Cabo, Alejandro Garcia-Chung, Alejandro Rosabal
The existence of a simple spherically symmetric and static solution of the Einstein equations in the presence of a cosmological constant vanishing outside a definite value of the r…
Melting curves and other phase transitions in a two dimensional electron assembly in a transverse magnetic field as a function of the Landau level filling factor
Alejandro Cabo, Francisco Claro, Norman N. March
Besides Laughlin/composite Fermion liquid, and Wigner solid, there have been proposals for Hall crystals and condensed phases of skyrmions for inclusion in the QHE systems phase di…
On heat flow and non-reciprocity
Alejandro Cabo
Heat transfer properties in non-reciprocal systems are discussed. An ideal experiment employing microwave or optical isolators is considered in order to investigate the possibility…
Baryonic resonances mass spectrum from a modified perturbative QCD
Alejandro Cabo, Marcos Rigol
A recently proposed modified perturbation expansion for QCD is employed to evaluate the quark self-energies. Results of the order of 1/3 of the nucleon mass are obtained for the ef…
Can the Red Shift be a consequence of the Dilaton field?
Alejandro Cabo, Alexis Amezaga
The possibility that the expansion rate of the Universe, as reflected by the Red Shift, could be produced by the existence of the dilaton field is explored. The analysis starts fro…
Central charges in regular mechanics
A. Cabo, J. L. Lucio M., V. Villanueva
We consider the algebra associated to a group of transformations which are symmetries of a regular mechanical system (i.e. system free of constraints). For time dependent coordinat…