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10 papers · 2 filters
Ab initio calculations of overlap integrals for conversion in nuclei
Matthias Heinz, Martin Hoferichter, Takayuki Miyagi +2
The rate for conversion in nuclei is set to provide the most stringent test of lepton-flavor symmetry and a window into physics beyond the Standard Model. However, to dise…
Improved structure of calcium isotopes from ab initio calculations
M. Heinz, T. Miyagi, S. R. Stroberg +3
The in-medium similarity renormalization group (IMSRG) is a powerful and flexible many-body method to compute the structure of nuclei starting from nuclear forces. Recent developme…
Inferring three-nucleon couplings from multi-messenger neutron-star observations
Rahul Somasundaram, Isak Svensson, Soumi De +5
Understanding the interactions between nucleons in dense matter is an important challenge in theoretical physics. Effective field theories have emerged as the dominant approach to…
Multicomponent Fermi systems at low densities
C. J. Pethick, A. Schwenk
We calculate, to second order in the scattering length between two fermions, the Landau quasiparticle interaction for a low-density mixture of two fermion species with unequal dens…
Ab initio Bogoliubov many-body perturbation theory: closed-form constraint on the average particle number
Pepijn Demol, Thomas Duguet, Alexander Tichai
Bogoliubov many-body perturbation theory (BMBPT) relying on the breaking of U(1) global gauge symmetry has been recently formulated and applied to extend the applicability of stand…
Neutron matter from local chiral effective field theory interactions at large cutoffs
I. Tews, R. Somasundaram, D. Lonardoni +6
Neutron matter is an important many-body system that provides valuable constraints for the equation of state (EOS) of neutron stars. Neutron-matter calculations employing chiral ef…