Regular Article –Theoretical Physics
Do we know how to count powers in pionless and pionful effective field theory?
Department of Physics, Chalmers University of Technology, 412 96, Göteborg, Sweden
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Accepted: 22 November 2019
Published online: 24 March 2020
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.
© The Author(s), 2020