Physics in curved spacetimes

• Grant number: 07/55449-1
• Support Opportunities: Research Projects - Thematic Grants
• Duration: August 01, 2008 - July 31, 2013
• 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
• Pesquisadores principais: 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; 09/17332-0 - Introduction to the time reversal of diffusion processes, BP.IC; 09/10774-8 - Quantum information and gravity: black holes, BP.MS; 09/13279-8 - Vortices on Riemann Surfaces, BP.MS; 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)

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)

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. (07/55449-1, 12/00737-0, 08/57856-6, 13/12165-4)

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. (07/55449-1, 13/12165-4, 11/06429-3)

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. (07/55449-1, 11/06429-3)

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, p. 16-pg., 2015-01-07. (12/00737-0, 08/57856-6, 13/12165-4, 07/55449-1)

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, p. 12-pg., 2014-08-18. (11/06429-3, 07/55449-1, 13/12165-4)