Banca de QUALIFICAÇÃO: Renato Rodrigues Luz

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : Renato Rodrigues Luz
DATE: 15/09/2023
TIME: 14:30
LOCAL: Auditório do CIF
TITLE:

Sistema de Interação Efetiva Quark-Antiquark Pesado via Mecânica Quântica Simplética


KEY WORDS:

Strong interaction, Cornell potential, Wigner function, Phase space, Bohlin transformation, Generalized Fractional Derivatives.


PAGES: 40
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUMMARY:
We explore within the structure of Symplectic Quantum Mechanics a bidimensional nonrelativistic strong interaction system which represent the bound state of heavy quark-antiquark, where we consider a Cornell potential which consists of Coulomb-type plus linear potentials. First, we solve the Schrödinger equation in the phase space with the linear potential. Thesolution (ground state) is obtained and analyzed by means of the Wigner function related to Airy function for the c c meson. In the second case, to treat the Schrödinger-like equation in the phase space, a procedure based on the Bohlin transformation is presented and applied to the Cornell potential. In this case, the system is separated into two parts, one analogous to the oscillator and the other we treat using perturbation method. Then, we quantized the Hamiltonian with the aid of stars operators in the phase space representation so that we can determine through the algebraic method the eigenfunctions of the undisturbed Hamiltonian (oscillator solution), and the other part of the Hamiltonian was the perturbation method. Theeigenfunctions found (undisturbed plus disturbed) are associated with the Wigner function via Weyl product using the representation theory of Galilei group in the phase space. The Wigner function is analyzed, and the nonclassicality of ground state and first excited state is studied by the nonclassicality indicator or negativity parameter of the Wigner function for this system. In some aspects, we observe that the Wigner function offers an easier way to visualize the nonclassic nature of meson system than the wavefunction does phase space.

COMMITTEE MEMBERS:
Presidente - 1706635 - ALEKSANDR NIKOLAIEVICH PINZUL
Interno - 1728391 - ALEXANDRE DODONOV
Externo ao Programa - 1803399 - RONNI GERALDO GOMES DE AMORIM - nullInterno - 2650530 - SERGIO COSTA ULHOA
Notícia cadastrada em: 14/09/2023 14:49
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