3 papers
cond-mat.other2026
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…
nucl-th2026
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…
nucl-th2025
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…