A meson-baryon bound state in a 2 + 1 lattice QCD model with two flavours and strong coupling.

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Autor(es): dc.creatorFrancisco Neto, Antônio-
Data de aceite: dc.date.accessioned2025-08-21T15:48:28Z-
Data de disponibilização: dc.date.available2025-08-21T15:48:28Z-
Data de envio: dc.date.issued2017-09-18-
Data de envio: dc.date.issued2017-09-18-
Data de envio: dc.date.issued2007-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/8742-
Fonte completa do material: dc.identifierhttp://iopscience.iop.org/article/10.1088/0031-8949/75/4/020/meta-
Fonte completa do material: dc.identifierhttps://doi.org/10.1088/0031-8949/75/4/020-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1024570-
Descrição: dc.descriptionWe consider the existence of bound states of one meson and one baryon in an imaginary-time formulation of lattice quantum chromodynamics (QCD). We analyse an SU(3) theory with two flavours in 2 + 1 dimensions and two-dimensional (2D) spin matrices. For small hopping parameter 0 < 1 and sufficiently large glueball mass, i.e., in the strong coupling limit, restricting our analysis to the 1/2 total isospin sector, we show the existence of a meson-baryon bound state solution to the Bethe–Salpeter (B–S) equation in a ladder approximation below the meson-baryon threshold ( −5ln ), and with binding energy of strength 0.1081 2. The existence of the bound state is an effect of two sources of attraction, a zero-range energy dependent potential and a space range-one potential associated with a quark anti-quark exchange.-
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Idioma: dc.languageen-
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Título: dc.titleA meson-baryon bound state in a 2 + 1 lattice QCD model with two flavours and strong coupling.-
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