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Dimensional effects in strongly interacting systems

Grant number: 19/10889-1
Support Opportunities:Regular Research Grants
Duration: September 01, 2019 - February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - Nuclear Physics
Principal Investigator:Varese Salvador Timoteo
Grantee:Varese Salvador Timoteo
Host Institution: Faculdade de Tecnologia (FT). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil


The aim of this project is to study some universal phenomena in strongly interacting systems e to verify if they are still present in reduced dimensions. One convenient model to perform this study is the NJL model for QCD, which despite for its simplicity describes very well the phenomenon of chiral symmetry breaking and the phase transition from the Wigner-Wyel phase to the Nambu-Golstone phase as the coupling between the fermions gets more intense. A similar study can also be done for Bose-Einstein condensates through the solution of the Gross-Pitaevskii equation. Even though the scales and systems are very different, in both cases we have a common ingredient which is a contact interaction used as an aproximation for more complex interactions between quarks or atoms. And the same scenario applies to the study of nuclear matter when the degrees of freedom are nucleons. Apart from these studies, we plan to conclude some works that were started in previous projects a to apply the three-body codes developed recently in hadronic, nuclear and atomic physics problems. (AU)

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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)
BATISTA, E. F.; SZPIGEL, S.; TIMOTEO, V. S.. Pions and Contacts at N4LO: Some details on the chiral nuclear force. ANNALS OF PHYSICS, v. 425, . (17/13282-5, 19/10889-1)
TOMIO, LAURO; FREDERICO, T.; TIMOTEO, V. S.; YAMASHITA, M. T.. Fixed-Point Few-Body Hamiltonians. FEW-BODY SYSTEMS, v. 63, n. 1, . (19/10889-1, 17/05660-0, 19/00153-8)

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