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Correlations across horizons in quantum cosmology
Ana Alonso-Serrano, Luis J. Garay, Guillermo A. Mena Marugan
Different spacetime regions separated by horizons are not related to each other. We know that this statement holds for classical spacetimes. In this paper we carry out a canonical…
The lifetime problem of evaporating black holes: mutiny or resignation
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay +1
It is logically possible that regularly evaporating black holes exist in nature. In fact, the prevalent theoretical view is that these are indeed the real objects behind the curtai…
Mutiny at the white-hole district
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay
The white-hole sector of Kruskal's solution is almost never used in physical applications. However, it might contain the solution to many of the problems associated with gravitatio…
Electromagnetism as an emergent phenomenon: a step-by-step guide
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay +1
We give a detailed description of electrodynamics as an emergent theory from condensed-matter-like structures, not only {\it per se} but also as a warm-up for the study of the much…
Absence of cosmological constant problem in special relativistic field theory of gravity
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay
The principles of quantum field theory in flat spacetime suggest that gravity is mediated by a massless particle with helicity , the so-called graviton. It is regarded as tex…
Unimodular gravity and general relativity from graviton self-interactions
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay
It is commonly accepted that general relativity is the only solution to the consistency problem that appears when trying to build a theory of interacting gravitons (massless spin-2…