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15 papers · 2 filters
Quantum reduced loop gravity: extension to gauge vector field
Jakub Bilski, Emanuele Alesci, Francesco Cianfrani +2
Within the framework of Quantum Reduced Loop Gravity we quantize the Hamiltonian for a gauge vector field. The regularization can be performed using tools analogous to the ones ado…
Deformed relativity symmetries and the local structure of spacetime
Marco Letizia, Stefano Liberati
A spacetime interpretation of deformed relativity symmetry groups was recently proposed by resorting to Finslerian geometries, seen as the outcome of a continuous limit endowed wit…
Higher-order theories of gravity: diagnosis, extraction and reformulation via non-metric extra degrees of freedom
Alessio Belenchia, Marco Letizia, Stefano Liberati +1
Modifications of Einstein's theory of gravitation have been extensively considered in the past years, in connection to both cosmology and quantum gravity. Higher-curvature and high…
Cosmological singularity resolution from quantum gravity: the emergent-bouncing universe
Emanuele Alesci, Gioele Botta, Francesco Cianfrani +1
Alternative scenarios to the Big Bang singularity have been subject of intense research for several decades by now. Most popular in this sense have been frameworks were such singul…
Tests of Quantum Gravity-Induced Non-Locality via Opto-mechanical Experiments
Alessio Belenchia, Dionigi M. T. Benincasa, Stefano Liberati +3
The nonrelativistic limit of nonlocal modifications to the Klein Gordon operator is studied, and the experimental possibilities of casting stringent constraints on the nonlocality…
Classical and Quantum Two-Body Problem in General Relativity
Amar Maheshwari, Emil Nissimov, Ivan Todorov
The two-body problem in general relativity is reduced to the problem of an effective particle (with an energy-dependent relativistic reduced mass) in an external field. The effecti…