Issue
EPL
Volume 85, Number 5, March 2009
Article Number 51003
Number of page(s) 5
Section The Physics of Elementary Particles and Fields
DOI http://dx.doi.org/10.1209/0295-5075/85/51003
Published online 17 March 2009
EPL, 85 (2009) 51003
DOI: 10.1209/0295-5075/85/51003

A nonperturbative parametrization and scenario for EFT renormalization

Ji-Feng Yang

Department of Physics, East China Normal University - Shanghai, 200062, China

jfyang@phy.ecnu.edu.cn

received 15 November 2008; accepted in final form 13 February 2009; published March 2009
published online 17 March 2009

Abstract
We present a universal form of the T-matrices renormalized in nonperturbative regime and the ensuing notions and properties that fail conventional wisdoms. A universal scale is identified and shown to be renormalization group invariant. The effective range parameters are derived in a nonperturbative scenario with some new predictions within the realm of contact potentials. Some controversies are shown to be due to the failure of conventional wisdoms.

PACS
13.75.Cs - Nucleon-nucleon interactions (including antinucleons, deuterons, etc.).
03.65.Nk - Scattering theory.
11.10.Gh - Renormalization.

© EPLA 2009