546 citations · 3.9k across the 55 of their papers we have counts for
7 papers · 1 filter
On the appearance of hyperons in neutron stars
Haris Djapo, Bernd-Jochen Schaefer, Jochen Wambach
By employing a recently constructed hyperon-nucleon potential the equation of state of β-equilibrated and charge neutral nucleonic matter is calculated. The hyperon-nucleon potenti…
Hyperon-nucleon single-particle potentials with low-momentum interactions
Haris Djapo, Bernd-Jochen Schaefer, Jochen Wambach
Single-particle potentials in Hartree-Fock approximation for different hyperon-nucleon (YN) channels are calculated in the framework of the effective low-momentum YN interaction V_…
On the convergence of multi-channel effective interactions
M. Wagner, B. -J. Schaefer, J. Wambach +2
A detailed analysis of convergence properties of the Andreozzi-Lee-Suzuki iteration method, which is used for the calculation of low-momentum effective potentials Vlowk is presente…
Low-momentum Hyperon-Nucleon Interactions
B. -J. Schaefer, M. Wagner, J. Wambach +2
We present a first exploratory study for hyperon-nucleon interactions using renormalization group techniques. The effective two-body low-momentum potential V_low-k is obtained by i…
The Phase Diagram of the Quark-Meson Model
Bernd-Jochen Schaefer, Jochen Wambach
Within the proper-time renormalization group approach, the chiral phase diagram of a two-flavor quark-meson model is studied. In the chiral limit, the location of the tricritical p…
Renormalization Group Flow and Equation of State of Quarks and Mesons
B. -J. Schaefer, H. -J. Pirner
Nonperturbative flow equations within an effective linear sigma model coupled to constituent quarks for two quark flavors are derived and solved. A heat kernel regularization is em…
Nonperturbative Flow Equations at Finite Temperature
B. -J. Schaefer, H. J. Pirner
Nonperturbative Flow Equations within an effective constituent quark model for two quark flavors with Heat-Kernel methods are studied.