Do we know how to count powers in pionless and pionful effective field theory?
Abstract
In this article I summarize recent progress in the effective field theory approach to low energy nuclear systems, with a focus on the power counting issue. In the pionless sector, where the power counting is quite well understood at the nucleon-nucleon (NN) level, I discuss some recent developments toward few- and many-body calculations. In the pionful sector, I focus on the actively debated issue of power counting in the NN sector and some recent developments toward a model-independent NN interaction. Finally, the scenario that the power counting might depend on the number of particles is discussed.
Keywords
Cite
@article{arxiv.1905.12510,
title = {Do we know how to count powers in pionless and pionful effective field theory?},
author = {C. -J. Yang},
journal= {arXiv preprint arXiv:1905.12510},
year = {2020}
}
Comments
19 pages, 1 figure. Contributions to the EPJA topical issue: The tower of effective (field) theories and the emergence of nuclear phenomena. Published version