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Physics in curved spacetimes

Grant number: 07/55449-1
Support type:Research Projects - Thematic Grants
Duration: August 01, 2008 - July 31, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:George Emanuel Avraam Matsas
Grantee:George Emanuel Avraam Matsas
Home Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
Co-Principal Investigators:Alberto Vazquez Saa
Associated scholarship(s):12/13893-0 - Dynamical symmetries and applications in gravity, BP.IC
12/00737-0 - Quantum information and relativity theory, BP.PD
11/12549-1 - Quantum cosmology on Horava-Lifshitz theory of gravitation and other aspects of quantum gravity, BP.PD
+ associated scholarships 11/06429-3 - Quantum field theory in spherically symmetric spacetimes and the vacuum awakening effect, BP.DR
10/20123-1 - Analogue models of gravity, BP.PD
10/18305-4 - Vacuum effects in Quantum Field Theory in Curved Spacetimes, BP.PD
09/16304-3 - Post-Newtonian models for self-gravitating systems, BP.PD
10/00487-9 - Dynamical study of Newtonian and Post-Newtonian self-gravitating systems with dark matter, BP.DR
09/10774-8 - Quantum information and gravity: black holes, BP.MS
09/13279-8 - Vortices on Riemann Surfaces, BP.MS
09/17332-0 - Introduction to the time reversal of diffusion processes, BP.IC
09/01564-0 - Interference in the radiation emitted by ionized accretion disks around black holes, BP.MS
08/11214-3 - Introduction to geometrical phases, BP.IC
08/01310-5 - Quantum singularities, BP.DR - associated scholarships

Abstract

The search for the fundamental theory which describes Nature at the Planck scale still seems to be far from being accomplished. Notwithstanding, whatever this theory turns out to be, it should contain Quantum Field Theory in the low-energy limit. In the case that matter fields are under the influence of strong gravitational fields, the standard formalism should be extended to take into account the existence of more general spacetimes. As a consequence, it was developed on the bases of General Relativity and Quantum Field Theory the Semi classical Gravity Theory (SGT) or Quantum Field Theory in Curved Spacetime (QFTCS). The SGT not only has led to more precise calculations for processes involving elementary particles in the presence of strong gravitational fields, but also has accomplished some surprising predictions as, e.g., the Hawking and the Unruh effects. The first one illustrates that QFTCS can anticipate macroscopic quantum gravity effects while the second one illustrates its power to clarify subtle conceptual issues. The present project has a multidisciplinary flavor. Recent developments have brought QFTCS over Information Theory (due to the information paradox associated with black hole evaporation) and Condensed Matter. The direct observation of QFTCS effects is not an easy task. Happily, this should be circumvented by the introduction of the gravitational analogs in condensed matter, which will receive particular attention. Finally, we shall explore the consequences of our investigations in classical physics, as e.g. in Thermodynamics of Black Holes. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
Theoretical study predicts "awakening" of the vacuum with macroscopic effects  
Articles published in Pesquisa FAPESP Magazine about the research grant:
Storms in a vacuum 

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)
LANDULFO, ANDRE G. S.; LIMA, WILLIAM C. C.; MATSAS, GEORGE E. A.; VANZELLA, DANIEL A. T. From quantum to classical instability in relativistic stars. Physical Review D, v. 91, n. 2 JAN 7 2015. Web of Science Citations: 5.
MENDES, RAISSA F. P.; MATSAS, GEORGE E. A.; VANZELLA, DANIEL A. T. Instability of nonminimally coupled scalar fields in the spacetime of slowly rotating compact objects. Physical Review D, v. 90, n. 4 AUG 18 2014. Web of Science Citations: 10.
MENDES, RAISSA F. P.; MATSAS, GEORGE E. A.; VANZELLA, DANIEL A. T. Quantum versus classical instability of scalar fields in curved backgrounds. Physical Review D, v. 89, n. 4 FEB 24 2014. Web of Science Citations: 12.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.