Light-front chiral effective field theory

Journal Article · Fri Nov 15 04:00:00 EST 2013 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778813100153· OSTI ID:22212626

Mathiot, J. -F. ^[1]

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1. Laboratoire de Physique Corpusculaire (France)

We propose a general framework to calculate the nonperturbative structure of relativistic bound state systems. The state vector of the bound state is calculated in the covariant formulation of light-front dynamics. In this scheme, the state vector is defined on the light front of general position {omega} {center_dot} x = 0, where {omega} is an arbitrary light-like four-vector. This enables a strict control of any violation of rotational invariance. The state vector is then decomposed in Fock components. Our formalism is applied to the description of the nucleon properties at low energy, in chiral perturbation theory. We also show that the use of a recently proposed regularization scheme, the so-called Taylor-Lagrange regularization scheme, is very adequate in order to treat divergences in this nonperturbative framework.

• OSTI ID: 22212626
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 11 Vol. 76; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOUND STATE
CHIRALITY
FIELD THEORIES
FOCK REPRESENTATION
NUCLEONS
PERTURBATION THEORY
RELATIVISTIC RANGE
ROTATIONAL INVARIANCE
VECTORS
VISIBLE RADIATION