20 citations · 75 across the 10 of their papers we have counts for
11 papers
Poisson brackets in Sobolev spaces: a mock holonomy-flux algebra
J Fernando Barbero G, Marc Basquens, Bogar Díaz +1
The purpose of this paper is to discuss a number of issues that crop up in the computation of Poisson brackets in field theories. This is specially important for the canonical appr…
Edge observables of the Maxwell-Chern-Simons theory
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
We analyze the Lagrangian and Hamiltonian formulations of the Maxwell-Chern-Simons theory defined on a manifold with boundary for two different sets of boundary equations derived f…
Adiabatic lapse rate of real gases
Bogar Díaz, Miguel Ángel García Ariza, J. E. Ramírez
We derive a formula for the dry adiabatic lapse rate of atmospheres composed of real gases. We restrict our study to those described by a family of two-parameter cubic equations of…
Consistent and non-consistent deformations of gravitational theories
J. Fernando Barbero G., Marc Basquens, Bogar Díaz +1
We study the internally abelianized version of a range of gravitational theories, written in connection tetrad form, and study the possible interaction terms that can be added to t…
Classical analogs of the covariance matrix, purity, linear entropy, and von Neumann entropy
Bogar Díaz, Diego González, Daniel Gutiérrez-Ruiz +1
We obtain a classical analog of the quantum covariance matrix by performing its classical approximation for any continuous quantum state, and we illustrate this approach with the a…
Mobility strategies based on percolation theory to avoid the spread of diseases: COVID-19
Diana Rosales Herrera, J. E. Ramírez, Jorge Velázquez-Castro +4
Human mobility is an important factor in the propagation of infectious diseases. In particular, the spatial spread of a disease is a consequence of human mobility. On the other han…
Hamiltonian Gotay-Nester-Hinds analysis of the parametrized unimodular extension of the Holst action
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
We give a detailed account of the Hamiltonian GNH analysis of the parametrized unimodular extension of the Holst action. The purpose of the paper is to derive, through the clear ge…
Interacting color strings as the origin of the liquid behavior of the quark-gluon plasma
J. E. Ramírez, Bogar Díaz, C. Pajares
We study the radial distribution function of the color sources (strings) formed in hadronic collisions and the requirements to obtain a liquid. As a repulsive interaction is needed…
Concise symplectic formulation for tetrad gravity
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
We discuss a simple symplectic formulation for tetrad gravity that leads to the real Ashtekar variables in a direct and transparent way. It also sheds light on the role of the Immi…
Generalizations of the Pontryagin and Husain-Kuchař actions to manifolds with boundary
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
In this paper we study a family of generalizations of the Pontryagin and Husain-Kuchař actions on manifolds with boundary. In some cases, they describe well-known models---either a…
Dirac's algorithm in the presence of boundaries: a practical guide to a geometric approach
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
The goal of this paper is to propose and discuss a practical way to implement the Dirac algorithm for constrained field models defined on spatial regions with boundaries. Our metho…