6 papers
Few-Body States in Fermi-Systems and Condensation Phenomena
P. Schuck, M. Beyer, G. Roepke +2
Residual interactions in many particle systems lead to strong correlations. A multitude of spectacular phenomenae in many particle systems are connected to correlation effects in s…
Isospin singlet (pn) pairing and quartetting contribution to the binding energy of nuclei
G. Roepke, A. Schnell, P. Schuck +1
Isospin singlet (pn) pairing as well as quartetting in nuclei is expected to arise near the symmetry line . Empirical values can be deduced from the nuclear binding energies a…
Precritical pair fluctuations and formation of a pseudogap in low-density nuclear matter
A. Schnell, G. Roepke, P. Schuck
Low-density nuclear matter at finite temperature is considered representing the strong coupling situation of a highly correlated fermion system. One-particle se lf-energies and the…
Two-particle properties in nuclear matter at finite temperatures
G. Roepke, A. Schnell
Correlation effects in nuclear matter at finite temperatures are studied for subnuclear densities () and medium excitation energy, where a nonrelativistic potential approach…
Four-particle condensate in strongly coupled fermion systems
G. Roepke, A. Schnell, P. Schuck +1
Four-particle correlations in fermion systems at finite temperatures are investigated with special attention to the formation of a condensate. Instead of the instability of the nor…
The Nucleon Spectral Function at Finite Temperature and the Onset of Superfluidity in Nuclear Matter
T. Alm, G. Roepke, A. Schnell +2
Nucleon selfenergies and spectral functions are calculated at the saturation density of symmetric nuclear matter at finite temperatures. In particular, the behaviour of these quant…