62 citations · 93 across the 4 of their papers we have counts for
6 papers
Dynamic Many-Body Theory: The dynamics of atomic impurities in He
Eckhard Krotscheck
We implement manifestly microscopic many-body methods to study the dynamics of atomic impurities in a host quantum fluid, specifically He. Our investigations are motivated by e…
Triplet pairing in neutron matter in a comprehensive diagrammatic approach
Panagiota Papakonstantinou, Eckhard Krotscheck, Jiawei Wang
We apply a large-scale summation of Feynman diagrams, including the class of parquet diagrams plus important contributions outside the parquet class, for calculating effective pair…
Variational Theory and Parquet Diagrams for Nuclear Systems: A Comprehensive Study of Neutron Matter
Eckhard Krotscheck, Jiawei Wang
To deal with the problem of realistic nuclear interactions we have combined techniques of the Jastrow-Feenberg variational method and the local parquet-diagram theory. In the langu…
Superfluid 4He dynamics beyond quasiparticle excitations
K. Beauvois, C. E. Campbell, J. Dawidowski +7
The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure fac…
Many-body aspects of positron annihilation in the electron gas
V. Apaja, S. Denk, E. Krotscheck
We investigate positron annihilation in electron liquid as a case study for many-body theory, in particular the optimized Fermi Hypernetted Chain (FHNC-EL) method. We examine sever…
Concentration Dependence of the Effective Mass of He-3 Atoms in He-3/He-4 Mixtures
E. Krotscheck, M. Saarela, K. Schoerkhuber +1
Recent measurements by Yorozu et al. (S. Yorozu, H. Fukuyama, and H. Ishimoto, Phys. Rev. B 48, 9660 (1993)) as well as by Simons and Mueller (R. Simons and R. M. Mueller, Czhechos…