Many-body theory for systems of composite hadrons

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dc.contributor.authorKrein, G. [UNESP]
dc.contributor.institutionUniversität Mainz
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:55:01Z
dc.date.available2022-04-28T19:55:01Z
dc.date.issued2000-12-01
dc.description.abstractMany-body systems of composite hadrons are characterized by processes that involve the simultaneous presence of hadrons and their constituents. We briefly review several methods that have been devised to study such systems and present a novel method that is based on the ideas of mapping between physical and ideal Fock spaces. The method, known as the Fock-Tani representation, was invented years ago in the context of atomic physics problems and was recently extended to hadronic physics. Starting with the Fock-space representation of single-hadron states, a change of representation is implemented by a unitary transformation such that composites are redescribed by elementary Bose and Fermi field operators in an extended Fock space. When the unitary transformation is applied to the microscopic quark Hamiltonian, effective, Hermitian Hamiltonians with a clear physical interpretation are obtained. The use of the method in connection with the linked-cluster formalism to describe short-range correlations and quark deconfinement effects in nuclear matter is discussed. As an application of the method, an effective nucleon-nucleon interaction is derived from a constituent quark model and used to obtain the equation of state of nuclear matter in the Hartree-Fock approximation. Copyright © 2000 by MAIK Nauka/Interperiodica (Russia).en
dc.description.affiliationInstitut für Kernphysik Universität Mainz, D-55099 Mainz
dc.description.affiliationInst. de Fis. Téorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SP
dc.description.affiliationUnespInst. de Fis. Téorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SP
dc.format.extent603-618
dc.identifier.citationPhysics of Particles and Nuclei, v. 31, n. 5, p. 603-618, 2000.
dc.identifier.issn1063-7796
dc.identifier.scopus2-s2.0-0034368921
dc.identifier.urihttp://hdl.handle.net/11449/224174
dc.language.isoeng
dc.relation.ispartofPhysics of Particles and Nuclei
dc.sourceScopus
dc.titleMany-body theory for systems of composite hadronsen
dc.typeArtigo

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