Vacuum Polarization Effects in the Worldline Variational Approach to Quantum Field Theory
High Energy Physics - Phenomenology
2009-11-11 v1
Abstract
The worldline variational approach is extended beyond the quenched approximation, i.e. to include virtual pair production of heavy particles. This is achieved either by an expansion of the functional determinant to second order or by an hybrid ansatz for the quadratic trial action consisting of fields for the light particles and worldlines for the heavy ones as in the linear polaron model. Numerical results and analytic approximations show a reduction of radiative effects with increasing number of flavors.
Keywords
Cite
@article{arxiv.hep-ph/0601088,
title = {Vacuum Polarization Effects in the Worldline Variational Approach to Quantum Field Theory},
author = {R. Rosenfelder},
journal= {arXiv preprint arXiv:hep-ph/0601088},
year = {2009}
}
Comments
3 pages, 2 figures, to be published in the proceedings of PANIC05, Santa Fe, NM, USA, Oct. 2005