Meson Structure in a Relativistic Many-Body Approach | Zendy

Felipe J. Llanes–Estrada | Zendy; Stephen R. Cotanch | Zendy

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Meson Structure in a Relativistic Many-Body Approach

Author(s) -

Felipe J. Llanes–Estrada,

Stephen R. Cotanch

Publication year - 2000

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.84.1102

Subject(s) - physics , meson , particle physics , pion , glueball , hamiltonian (control theory) , goldstone boson , quantum chromodynamics , quark , qcd vacuum , hadron , eta meson , boson , nuclear physics , lattice qcd , mathematical optimization , mathematics

Results from an extensive relativistic many-body analysis utilizing a realistic effective QCD Hamiltonian are presented for the meson spectrum. A comparative numerical study of the BCS, Tamm-Dancoff (TDA), and RPA treatments provides new, significant insight into the condensate structure of the vacuum, the chiral symmetry governance of the pion, and the meson spin, orbital, and flavor mass splitting contributions. In contrast to a previous glueball application, substantial quantitative differences are computed between TDA and RPA for the light quark sector with the pion emerging as a Goldstone boson only in the RPA.

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