68 citations · 463 across the 36 of their papers we have counts for
36 papers
From Holst to Carroll Gravity, a Hamiltonian point of view
J. Fernando Barbero G, Juan Margalef-Bentabol, Valle Varo +1
The Carrollian regime of gravity provides a useful ultrarelativistic framework for studying asymptotically flat spacetimes, horizon dynamics, and condensed matter systems. In this…
Husain-Kuchař model as the Carrollian limit of the Holst term
J. Fernando Barbero G., Juan Margalef-Bentabol, Aitor Vicente-Cano +1
We show how the Husain-Kuchař model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes…
Hidden diffeos in the Hamiltonian formulation of a background independent field theory
J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol +1
We analyze from a geometric perspective the Hamiltonian formulation of a recent modification of the Husain-Kuchař model where, while preserving the connection as a dynamical variab…
Dynamical time and Ashtekar variables for the Husain-Kuchař model
J. Fernando Barbero G., Juan Margalef-Bentabol, Aitor Vicente-Cano +1
The relation between the Husain-Kuchař model and some extensions thereof that incorporate a dynamical time variable is explored. To this end, we rely on the geometric approach to t…
Euclidean self-dual gravity: Ashtekar variables without gauge fixing
J. Fernando Barbero G., Marc Basquens, Eduardo J. S. Villaseñor
The Gotay-Nester-Hinds method is used in this paper to study the Hamiltonian formulation of the Euclidean self-dual action. This action can be used to arrive at the complex Ashteka…
Black Hole Entropy in Loop Quantum Gravity
J. Fernando Barbero G., Daniele Pranzetti
We give an account of the state of the art about black hole entropy in Loop Quantum Gravity. This chapter contains a historical summary and explains how black hole entropy is descr…