Existence of diproton-like particles in 3 þ 1 lattice QCD with two flavors and strong coupling.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorVeiga, Paulo Afonso Faria da-
Autor(es): dc.creatorO'Carroll, Michael Louis-
Autor(es): dc.creatorFrancisco Neto, Antônio-
Data de aceite: dc.date.accessioned2025-08-21T15:34:58Z-
Data de disponibilização: dc.date.available2025-08-21T15:34:58Z-
Data de envio: dc.date.issued2017-09-18-
Data de envio: dc.date.issued2017-09-18-
Data de envio: dc.date.issued2011-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/8736-
Fonte completa do material: dc.identifierhttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.83.034506-
Fonte completa do material: dc.identifierhttps://doi.org/10.1103/PhysRevD.83.034506-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1018907-
Descrição: dc.descriptionStarting from quarks, gluons, and their dynamics, we consider the existence of two-baryon bound states of total isospin I ¼ 1 in an imaginary-time formulation of a strongly coupled 3 þ 1-dimensional SUð3Þc lattice QCD with two flavors and 4 4 spin matrices, defined using the Wilson action. For a small hopping parameter >0 and a much smaller gauge coupling 0< 1 (heavy quarks and large glueball mass), using a ladder approximation to a lattice Bethe-Salpeter equation, diproton-like bound states are found in the I ¼ 1 isospin sector, with asymptotic masses 6 ln and binding energies of order 2. By isospin symmetry, for each diproton there is also a dineutron bound state with the same mass and binding energy. The dominant two-baryon interaction is an energy-independent spatial range-one potential with an Oð 2Þ strength. There is also an attraction arising from gauge field correlations associated with six overlapping bonds, but it is subdominant. The overall range-one potential results from a quark-antiquark exchange with no meson exchange interpretation (wrong spin indices). The repulsive or attractive nature of the interaction does depend on the isospin and spin of the two-baryon states. A novel representation in term of permanents is obtained for the spin, isospin interaction between the baryons, which is valid for any isospin sector.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Título: dc.titleExistence of diproton-like particles in 3 þ 1 lattice QCD with two flavors and strong coupling.-
Aparece nas coleções:Repositório Institucional - UFOP

Não existem arquivos associados a este item.