Meson Structure in a Relativistic Many-Body Approach

Journal Article · Mon Feb 07 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.1102· OSTI ID:20215525

Llanes-Estrada, Felipe J; Cotanch, Stephen R

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. (c) 2000 The American Physical Society.

• OSTI ID: 20215525
• Journal Information: Physical Review Letters, Vol. 84, Issue 6; Other Information: PBD: 7 Feb 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
MESONS
MANY-BODY PROBLEM
QUANTUM CHROMODYNAMICS
RELATIVISTIC RANGE
BCS THEORY
TAMM-DANCOFF METHOD
QUARK MODEL
THEORETICAL DATA