Banca de DEFESA: RALINE SILVA DE ARAÚJO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RALINE SILVA DE ARAÚJO
DATE: 27/07/2023
TIME: 10:00
LOCAL: IF
TITLE:

Dynamical Lorentz symmetry breaking in a derivative four-fermion model

KEY WORDS:

dynamical symmetry breaking; derivative four-fermion model; finite temperature

PAGES: 79
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUBÁREA: Física das Partículas Elementares e Campos
SPECIALTY: Teoria Geral de Partículas e Campos
SUMMARY:

In this dissertation we investigate spontaneous Lorentz symmetry breaking in a 4-fermion derivative model. The essence of the spontaneous Lorentz symmetry breaking mechanism consists in the coupling of tensor fields through potentials in such a way that, in the minima of the potentials, these fields acquire expected values of non-trivial vacuum, thus introducing privileged space-time directions. For this model we calculate the effective potential in the context of zero temperature and finite temperature, we also investigate the conditions for symmetry restoration. Next, we calculate the corresponding effective action and show that the resulting potential is positively defined and has a continuous set of minima, as well as performing the induction of the second order kinetic action in the auxiliary field.

BANKING MEMBERS:
Presidente - 1638021 - TIAGO HOMERO MARIZ DO NASCIMENTO
Externo(a) à Instituição - ALESANDRO FERREIRA DOS SANTOS - UFMT
Externo(a) à Instituição - JOB SARAIVA FURTADO NETO - UFCA