Herbert Müther

TL;DR: In this article, a self-consistent calculation of nuclear matrix elements of the neutrinoless double-beta decays in the framework of the renormalized quasiparticle random phase approximation (RQRPA) and the standard QRPA is presented.

TL;DR: In this paper, various approaches to account for such correlations are described and compared to each other, including the holeline expansion, the coupled cluster or exponential S approach, the selfconsistent evaluation of Greens functions, variational approaches using correlated basis functions and recent developments employing quantum Monte-Carlo techniques.

TL;DR: In this paper, the single-particle spectral functions in asymmetric nuclear matter were computed using the ladder approximation within the theory of finite temperature Green's functions, and the internal energy and the momentum distributions of protons and neutrons were studied as a function of the density and the asymmetry of the system.

TL;DR: In this paper, the phase diagram of a two-component ultracold atomic Fermi gas interacting with zero-range forces in the limit of weak coupling was explored and the dependence of the pairing gap and the free energy on the variations in the number densities of the two species while the total density of the system is held fixed.

TL;DR: In this article, the properties of symmetric nuclear matter were investigated within Green's functions approach and the in-medium scattering equation was solved for a realistic (nonseparable) nucleon-nucleon interaction including both particle-particle and hole-hole propagation.