Chaos in Fermionic Many-Body Systems and the Metal-Insulator Transition (2009)
Pluhar, Z., Weidenmueller, H. A., Papenbrock, T., Tithof, J.
We show that finite Fermi systems governed by a mean field and a few-body interaction generically possess spectral fluctuations of the Wigner-Dyson type and are thus chaotic. Our proof is based on an...
Ab-initio computation of neutron-rich oxygen isotopes (2009)
Hagen, G., Papenbrock, T., Dean, D. J., Hjorth-Jensen, M., Asokan, B. Velamur
We compute the binding energy of neutron-rich oxygen isotopes and employ the coupled-cluster method and chiral nucleon-nucleon interactions at next-to-next-to-next-to-leading order with two different...
Solution of the center-of-mass problem in nuclear structure calculations (2009)
Hagen, G., Papenbrock, T., Dean, D. J.
The coupled-cluster wave function factorizes to a very good approximation into a product of an intrinsic wave function and a Gaussian for the center-of-mass coordinate. The width of the Gaussian is...