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Oscillons in scalar field theories

Grant number: 17/26646-5
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): May 01, 2018
Effective date (End): April 30, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Tobias Frederico
Grantee:Rafael Augusto Couceiro Correa
Supervisor abroad: Giuseppe Mussardo
Home Institution: Divisão de Ciências Fundamentais (IEF). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
Local de pesquisa : Scuola Internazionale Superiore di Studi Avanzati (SISSA), Italy  
Associated to the scholarship:16/03276-5 - General theory of Oscillons in Lorentz violating scenarios, configurational entropy and physics of nanomaterials, BP.PD


In this one year research stay in SISSA, my aim is to study configurations in classical field theory, which are time-dependent, localized in space and extremely long-lived called oscillons. I am interested in the study ofsystems in which there are one, two or more scalar fields with nonlinear interactions. I will study the fundamental properties of oscillons using nonperturbative analytical methods, obtaining for the first time a full analytical characterization of oscillons. Specifically, my research will focus on the dynamics of the oscillons by analytical methods capable to tackle the issues of stability, lifetime, decay rate, energy spectrum, frequency over the course of its life, amplitude, radius, and radiation rate. Using these analytical methods I will investigate how a gas of oscillons could be produced under the conditions present in the early Universe. I also intend to study oscillons in integrable classical field theories and apply them to investigate a primordial cosmological scenario, where a gas of interacting oscillons plays a major role. My supervisor in SISSA, Prof. Giuseppe Mussardo, is an expert in statistical mechanics and integrable field theories and I expect that with his collaboration I will be able to solve these fundamental problems. (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)
MORAES, P. H. R. S.; DE PAULA, W.; CORREA, R. A. C. Charged wormholes in f (R, T)-extended theory of gravity. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 28, n. 8 JUN 2019. Web of Science Citations: 0.
MORAES, P. H. R. S.; CORREA, R. A. C. The Importance of Scalar Fields as Extradimensional Metric Components in Kaluza-Klein Models. ADVANCES IN ASTRONOMY, 2019. Web of Science Citations: 0.
MORAES, P. H. R. S.; SAHOO, P. K.; RIBEIRO, G.; CORREA, R. A. C. A Cosmological Scenario from the Starobinsky Model within the f(R,T) Formalism. ADVANCES IN ASTRONOMY, 2019. Web of Science Citations: 0.
SANTOS, J. R. L.; DE SOUZA DUTRA, A.; WINTER, O. C.; CORREA, R. A. C. A General Method for Transforming Nonphysical Configurations in BPS States. Advances in High Energy Physics, 2019. Web of Science Citations: 0.
CORREA, R. A. C.; MORAES, P. H. R. S.; DE SOUZA DUTRA, A.; SANTOS, J. R. L.; DE PAULA, W. Cosmological scenarios from multiquintessence. EUROPEAN PHYSICAL JOURNAL C, v. 78, n. 11 OCT 30 2018. Web of Science Citations: 2.

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