中文

Dyson-Schwinger equations: a tool for hadron physics

核理论 2010-03-04 v1 高能物理 - 实验 高能物理 - 格点 高能物理 - 唯象学 核实验

摘要

Dyson-Schwinger equations furnish a Poincare' covariant framework within which to study hadrons. A particular feature is the existence of a nonperturbative, symmetry preserving truncation that enables the proof of exact results. The gap equation reveals that dynamical chiral symmetry breaking is tied to the long-range behaviour of the strong interaction, which is thereby constrained by observables, and the pion is precisely understood, and seen to exist simultaneously as a Goldstone mode and a bound state of strongly dressed quarks. The systematic error associated with the simplest truncation has been quantified, and it underpins a one-parameter model efficacious in describing an extensive body of mesonic phenomena. Incipient applications to baryons have brought successes and encountered challenges familiar from early studies of mesons, and promise a covariant field theory upon which to base an understanding of contemporary large momentum transfer data.

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引用

@article{arxiv.nucl-th/0301049,
  title  = {Dyson-Schwinger equations: a tool for hadron physics},
  author = {P. Maris and C. D. Roberts},
  journal= {arXiv preprint arXiv:nucl-th/0301049},
  year   = {2010}
}

备注

67 pages, LaTeX2e, Review