5 papers
Husain-KuchaÅ 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-KuchaÅ model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframe…
Buchdahl limits in theories with regular black holes
Pablo Bueno, Robie A. Hennigar, Ãngel J. Murcia +1
We study generalizations of Buchdahl's compactness limits for perfect-fluid star solutions of -dimensional Einstein gravity coupled to higher-curvature corrections. We focus on…
Regular Geometries from Singular Matter in Quasi-Topological Gravity
Pablo Bueno, Robie A. Hennigar, Ãngel J. Murcia +1
Vacuum quasi-topological gravity with infinitely many terms in the action satisfies Markov's limiting curvature hypothesis: the spherically symmetric solutions are regular and all…
Regular black holes from Oppenheimer-Snyder collapse
Pablo Bueno, Pablo A. Cano, Robie A. Hennigar +2
It has been recently shown that regular black holes arise as the unique spherically symmetric solutions of broad families of generalizations of Einstein gravity involving infinite…
Dynamical time and Ashtekar variables for the Husain-KuchaÅ model
J. Fernando Barbero G., Juan Margalef-Bentabol, Aitor Vicente-Cano +1
The relation between the Husain-KuchaÅ model and some extensions thereof that incorporate a dynamical time variable is explored. To this end, we rely on the geometric approach to…