6533b854fe1ef96bd12aeb65

RESEARCH PRODUCT

Recent developments in effective field theory

Stefan Scherer

subject

PhysicsNuclear and High Energy PhysicsChiral perturbation theoryMesonNuclear TheoryHigh Energy Physics::LatticeNuclear TheoryDegrees of freedom (statistics)FOS: Physical sciencesRenormalizationNuclear Theory (nucl-th)Theoretical physicsPionRegularization (physics)Effective field theoryNucleonNuclear Experiment

description

We will give a short introduction to the one-nucleon sector of chiral perturbation theory and will address the issue of a consistent power counting and renormalization. We will discuss the infrared regularization and the extended on-mass-shell scheme. Both allow for the inclusion of further degrees of freedom beyond pions and nucleons and the application to higher-loop calculations. As applications we consider the chiral expansion of the nucleon mass to order O(q^6) and the inclusion of vector and axial-vector mesons in the calculation of nucleon form factors.

10.1016/j.ppnp.2007.12.029http://arxiv.org/abs/0711.0309