317 citations · 1.9k across the 62 of their papers we have counts for
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Fundamental Symmetries and Spacetime Geometries in Gauge Theories of Gravity: Prospects for Unified Field Theories
Francisco Cabral, Francisco S. N. Lobo, Diego Rubiera-Garcia
Gravity can be formulated as a gauge theory by combining symmetry principles and geometrical methods in a consistent mathematical framework. The gauge approach to gravity leads dir…
Structure and stability of traversable thin-shell wormholes in Palatini gravity
Francisco S. N. Lobo, Gonzalo J. Olmo, Emanuele Orazi +2
We study the structure and stability of traversable wormholes built as (spherically symmetric) thin shells in the context of Palatini gravity. Using a suitable jun…
Wormholes, energy conditions and time machines
Francisco S. N. Lobo, Diego Rubiera-Garcia
This report is based on the Parallel Session AT3 ``Wormholes, Energy Conditions and Time Machines'' of the Fifteenth Marcel Grossmann Meeting - MG15, held at the University of Rome…
Constant roll inflation in multifield models
Merce Guerrero, Diego Rubiera-Garcia, Diego Saez-Chillon Gomez
Constant roll inflation is analyzed in the presence of multi scalar fields which are assumed to be described by a constant roll rate each. The different cases are studied and the c…
Junction conditions in Palatini gravity
Gonzalo J. Olmo, Diego Rubiera-Garcia
We work out the junction conditions for gravity formulated in metric-affine (Palatini) spaces using a tensor distributional approach. These conditions are needed for buildin…
Nonsingular black holes in nonlinear gravity coupled to Euler-Heisenberg electrodynamics
Merce Guerrero, Diego Rubiera-Garcia
We study static, spherically symmetric black holes supported by Euler-Heisenberg theory of electrodynamics and coupled to two different modified theories of gravity. Such theories…