Ladder approximation for spontaneous chiral-symmetry breaking

Journal Article · Mon Oct 03 04:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.1553· OSTI ID:6828656

Appelquist, T; Lane, K; Mahanta, U

This paper examines the validity of the ladder approximation in gauge theories such as technicolor theories in which the coupling is a slowly running function of momentum and is large enough to trigger spontaneous chiral-symmetry breaking. We find that the next-higher-order terms beyond the ladder approximation amount to only a 1%--20% correction, depending on the fermion representation. This indicates that the ladder expansion may provide a much better description of chiral-symmetry breaking than previously thought.

• Research Organization: Yale University, Physics Department, New Haven, Connecticut 06511
• OSTI ID: 6828656
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:14; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
COUPLING CONSTANTS
CURRENTS
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
LEPTONS
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
PERTURBATION THEORY
POSTULATED PARTICLES
QUARK MODEL
QUARKS
SU GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS