Power counting in chiral effective field theory and nuclear binding

CJ Yang, A Ekström, C Forssén, G Hagen - Physical Review C, 2021 - APS
Chiral effective field theory (χ EFT), as originally proposed by Weinberg, promises a
theoretical connection between low-energy nuclear interactions and quantum …

Nucleon-nucleon scattering up to next-to-next-to-leading order in manifestly Lorentz-invariant chiral effective field theory: Peripheral phases

XL Ren, E Epelbaum, J Gegelia - Physical Review C, 2022 - APS
We study the nucleon-nucleon interaction up to next-to-next-to-leading order using time-
ordered perturbation theory in the framework of manifestly Lorentz-invariant chiral effective …

Nucleon-nucleon interaction in chiral effective field theory with a finite cutoff: Explicit perturbative renormalization at next-to-leading order

AM Gasparyan, E Epelbaum - Physical Review C, 2022 - APS
We present a study of two-nucleon scattering in chiral effective field theory with a finite cutoff
to next-to-leading order in the chiral expansion. In the proposed scheme, the contributions of …

“Renormalization-group-invariant effective field theory” for few-nucleon systems is cutoff dependent

AM Gasparyan, E Epelbaum - Physical Review C, 2023 - APS
We consider nucleon-nucleon scattering using the formulation of chiral effective field theory
which is claimed to be renormalization group invariant. The cornerstone of this framework is …

Constructing chiral effective field theory around unnatural leading-order interactions

R Peng, S Lyu, S König, B Long - Physical Review C, 2022 - APS
A momentum-dependent formulation based on a stationary spin-0 and isospin-1 dibaryon
field is proposed to improve convergence of chiral effective field theory in the 1 S 0 channel …

Symmetries of the Nucleon–Nucleon S-Matrix and Effective Field Theory Expansions

SR Beane, RC Farrell - Few-Body Systems, 2022 - Springer
The s-wave nucleon–nucleon scattering matrix (S-matrix) exhibits UV/IR symmetries which
are hidden in the effective field theory (EFT) action and scattering amplitudes, and which …

Renormalization of -violating nuclear forces

J de Vries, A Gnech, S Shain - Physical Review C, 2021 - APS
Electric dipole moments of nuclei, diamagnetic atoms, and certain molecules are induced by
CP-violating nuclear forces. Naive dimensional analysis predicts these forces to be …

Effective field theory for shallow P-wave states

E Epelbaum, J Gegelia, HP Huesmann, UG Meißner… - Few-Body Systems, 2021 - Springer
We discuss the formulation of a non-relativistic effective field theory for two-body P-wave
scattering in the presence of shallow states and critically address various approaches to …

Renormalizability of leading order covariant chiral nucleon-nucleon interaction

CX Wang, LS Geng, B Long - Chinese Physics C, 2021 - iopscience.iop.org
In this work, we study the renormalization group invariance of the recently proposed
covariant power counting in the case of nucleon-nucleon scattering [Chin. Phys. C 42 (2018) …

Worldline Monte Carlo method for few-body nuclear physics

S Chandrasekharan, ST Nguyen, TR Richardson - Physical Review C, 2024 - APS
In this work we introduce a worldline-based fermion Monte Carlo algorithm for studying few
body quantum mechanics of self-interacting fermions in the Hamiltonian lattice formulation …