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Quantum field theory in curved spacetimes and backreaction

Abstract

On the one hand, quantum field theory in curved spacetimes (QFTCS) is the best formalism we have for studying quantum effects in predefined spacetimes at energies low enough such that quantum gravitational degrees of freedom -- whatever they are -- are not excited. On the other hand, QFTCS is not reliable, in general, to explain how quantum systems impact our present space-time concept: a smooth manifold equipped with a metric. In this project, we propose to continue analyzing aspects of QFTCS, where we have given our main contributions and to add a new front looking for insights at low energies on how matter and space-time could evolve harmoniously according to quantum mechanics. Recent solid developments suggest that quantum gravity insights may indeed derive from this type of analysis. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

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)
DA SILVA, JOAO V. B.; AGUIAR, GABRIEL H. S.; MATSAS, GEORGE E. A.. Disfavoring the Schrodinger-Newton equation in explaining the emergence of classicality. PHYSICAL REVIEW A, v. 108, n. 1, p. 6-pg., . (22/10561-9, 22/08424-3)
MATSAS, GEORGE E. A.; PLEITEZ, VICENTE; SAA, ALBERTO; VANZELLA, DANIEL A. T.. The number of fundamental constants from a spacetime-based perspective. SCIENTIFIC REPORTS, v. 14, n. 1, p. 12-pg., . (23/04827-9, 21/09293-7, 22/10561-9)
AGUIAR, GABRIEL H. S.; MATSAS, GEORGE E. A.. Probing the Schrödinger-Newton equation in a Stern-Gerlach-like experiment. PHYSICAL REVIEW A, v. 109, n. 3, p. 6-pg., . (22/08424-3, 22/10561-9)