Baryons 2022 - International Conference on the Structure of Baryons

Explicit renormalization of nuclear chiral EFT and non-perturbative effects

Not scheduled

20m

Seville

Parallel contribution Theory for strong QCD

Speaker

Ashot Gasparyan

Description

Nucleon-nucleon interaction is studied within chiral effective field theory at next-to-leading order in the chiral expansion.
The leading order interaction is resummed non-perturbatively,
whereas the next-to-leading-order terms are taken into account in a perturbative manner.
Explicit renormalizability of such a scheme is analyzed in several important cases. The possibility to absorb the power-counting
breaking terms originating from the integration regions with large momenta is studied for both perturbative and non-perturbative regimes.
A comparison of the schemes with a finite and an infinite
cutoff is performed.