Quantum field theory in curved spacetimes and backreaction

• Grant number: 22/10561-9
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2022
• End date: April 30, 2025
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: George Emanuel Avraam Matsas
• Grantee: George Emanuel Avraam Matsas
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
• City of the host institution: São Paulo

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)

Scientific publications

(5)

(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)

AGUIAR, GABRIEL H. S.; MATSAS, GEORGE E. A.. Simple gravitational self-decoherence model. PHYSICAL REVIEW D, v. 112, n. 4, p. 15-pg., 2025-08-05. (22/10561-9, 22/08424-3)

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., 2024-03-25. (22/08424-3, 22/10561-9)

PEGAS, JUAN V. O.; LANDULFO, ANDRE G. S.; MATSAS, GEORGE E. A.; VANZELLA, DANIEL A. T.. Globally hyperbolic evaporating black hole and the information loss issue. Classical and Quantum Gravity, v. 42, n. 6, p. 23-pg., 2025-03-21. (22/14028-3, 22/10561-9, 23/04827-9)

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., 2024-09-30. (23/04827-9, 21/09293-7, 22/10561-9)

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., 2023-07-24. (22/10561-9, 22/08424-3)