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Semiclassical gravity and Quantum Information Theory


Quantum Field Theory in Curved Space-Times (TQCEC) allows us to make sound predictions in situations involving quantum fields in the presence of strong (classical) gravitational fields. We intend to focus mainly on two fronts in which it has been proven effective: (1) study its interface with quantum information theory to not only find new low-energy quantum gravity effects (i.e. for energies far below Planck scale) but also to study the influence of relativity in quantum information theory and (2) apply standard perturbative quantum field theory techniques to gravity from the perspective of an effective field theory to analyze the gravitationally-induced decoherence. Approach (1) will allow us to study entanglement and correlations dynamics as well as the transmission of classical and quantum information in curved space-times. It is our hope to be able to shed some light on some open problems such as the destruction of information by black holes and the origin of its entropy. As it gravity couples with any field in the same way, general relativity makes decoherence an inevitable process. Hence, approach (2) will allow us to analyze what the semiclassical gravity has to say about this process (which may have astrophysical and cosmological implications). In addition to the topics (1) and (2), we are also interested in analyzing the vacuum stability in the presence of strong gravitational fields. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
COZZELLA, GABRIEL; LANDULFO, ANDRE G. S.; MATSAS, GEORGE E. A.; VANZELLA, DANIEL A. T.. Proposal for Observing the Unruh Effect using Classical Electrodynamics. Physical Review Letters, v. 118, n. 16, . (16/08025-0, 15/22482-2, 14/26307-8, 13/12165-4)
SANTIAGO, JESSICA; LANDULFO, ANDRE G. S.; LIMA, WILLIAM C. C.; MATSAS, GEORGE E. A.; MENDES, RAISSA F. P.; VANZELLA, DANIEL A. T.. Instability of nonminimally coupled scalar fields in the spacetime of thin charged shells. Physical Review D, v. 93, n. 2, . (13/12165-4, 14/26307-8, 13/07105-2)
LANDULFO, ANDRE G. S.. Nonperturbative approach to relativistic quantum communication channels. Physical Review D, v. 93, n. 10, . (14/26307-8)

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