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Nonperturbative aspects of the QCD Green's functions

Grant number: 17/07595-0
Support type:Regular Research Grants
Duration: September 01, 2017 - August 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Arlene Cristina Aguilar
Grantee:Arlene Cristina Aguilar
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Assoc. researchers: Joannis Papavassiliou

Abstract

In this project we will study some of the key aspects for understanding the dynamics of the fundamental QCD infrared Green's functions. To do that, we will employ the Schwinger-Dyson equations in the framework of the Pinch Technique and Background Field Method (PT-BFM). The project is divided into seven main topics. In the first topic, we will study (i) the longitudinal form factors of the three-gluon vertex in an arbitrary kinematic configuration. In the second point, we will (ii) analyze how the position of the so-called "crossing'', which appears in the three-gluon vertex, is affected by the presence of the quark fields. In what concerns the quark-gluon vertex, (iii) we intend to determine its transverse form factors for a general kinematic configuration and (iv) derive the non-perturbative correction to the quark chromomagnetic moment. We will also analyze, (v) how the quark and gluon propagators behave in general covariant gauges. In addition, we will study (vi) what is the impact of the quark-gluon longitudinal form factors in the quark dynamical mass generation. Finally, (vii) we will study the glueball formation using the Bethe-Salpeter equation. (AU)

Scientific publications (4)
(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)
AGUILAR, A. C.; FERREIRA, M. N.; FIGUEIREDO, C. T.; PAPAVASSILIOU, J. Nonperturbative Ball-Chiu construction of the three-gluon vertex. Physical Review D, v. 99, n. 9 MAY 10 2019. Web of Science Citations: 0.
AGUILAR, A. C.; FERREIRA, M. N.; FIGUEIREDO, C. T.; PAPAVASSILIOU, J. Nonperturbative structure of the ghost-gluon kernel. Physical Review D, v. 99, n. 3 FEB 28 2019. Web of Science Citations: 4.
AGUILAR, A. C.; CARDONA, J. C.; FERREIRA, M. N.; PAPAVASSILIOU, J. Quark gap equation with non-Abelian Ball-Chiu vertex. Physical Review D, v. 98, n. 1 JUL 2 2018. Web of Science Citations: 11.
ARLENE CRISTINA AGUILAR. Diagramas de Feynman: O poder de uma imagem. Revista Brasileira de Ensino de Física, v. 40, n. 4, p. -, 2018.

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