494 citations · 3.2k across the 38 of their papers we have counts for
6 papers · 1 filter
Two-pion exchange as a leading-order contribution in chiral effective field theory
Chinmay Mishra, A. Ekström, G. Hagen +2
Pion exchange is the central ingredient to nucleon-nucleon interactions used in nuclear structure calculations, and one pion exchange (OPE) enters at leading order in chiral effect…
Bayesian parameter estimation in EFT using Hamiltonian Monte Carlo
Isak Svensson, Andreas Ekström, Christian Forssén
The number of low-energy constants (LECs) in chiral effective field theory (EFT) grows rapidly with increasing chiral order, necessitating the use of Markov chain Monte Carlo te…
The importance of few-nucleon forces in chiral effective field theory
C. -J. Yang, A. Ekström, C. Forssén +3
We study the importance of few-nucleon forces in chiral effective field theory for describing many-nucleon systems. A combinatorial argument suggests that three-nucleon forces -- w…
Wave-packet continuum discretisation for nucleon-nucleon scattering predictions
Sean B. S. Miller, Andreas Ekström, Christian Forssén
In this paper we analyse the efficiency, precision, and accuracy of computing elastic nucleon-nucleon (NN) scattering amplitudes with the wave-packet continuum discretisation metho…
Normal-ordering approximations and translational (non) invariance
T. Djärv, A. Ekström, C. Forssén +1
Normal-ordering provides an approach to approximate three-body forces as effective two-body operators and it is therefore an important tool in many-body calculations with realistic…
Rigorous constraints on three-nucleon forces in chiral effective field theory from fast and accurate calculations of few-body observables
S. Wesolowski, I. Svensson, A. Ekström +4
We explore the constraints on the three-nucleon force (3NF) of chiral effective field theory (EFT) that are provided by bound-state observables in the and sectors. O…