Effective Lagrangians in bound state calculations
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
In order to investigate specific aspects of bound state calculations in a non-relativistic framework, we consider the energy-levels of a massive scalar particle, which moves in an external field and interacts in addition with a massless scalar particle. The discussion includes the following topics: dimensionally regularized bound-state calculations, ultraviolet finiteness of bound-state observables and their independence of the off-mass-shell behavior of Green functions, non-renormalizable interactions, structure of the non-relativistic two-point function, power counting and matching.
Keywords
Cite
@article{arxiv.hep-ph/0003118,
title = {Effective Lagrangians in bound state calculations},
author = {V. Antonelli and A. Gall and J. Gasser and A. Rusetsky},
journal= {arXiv preprint arXiv:hep-ph/0003118},
year = {2009}
}
Comments
45 pages, 8 postscript figures, RevTeX style