4 papers
Fixed-Point Hamiltonians in Quantum Mechanics
T. Frederico, A. Delfino, Lauro Tomio +1
We show how to derive fixed-point Hamiltonians in quantum mechanics from a proposed renormalization group invariance approach that relies in a subtraction procedure at a given ener…
Modified Zimanyi-Moszkowski Model for Finite Nuclei
A. Delfino, M. Chiapparini, W. A. Colchete
By scaling the mesonic masses in the Walecka model, to the inverse of the hadronic effective mass in medium, we generate the Zimanyi-Moszkowski (ZM) models added to a surface term.…
The Two - Dimensional Attractive Hubbard Model: Highly Non-Linear Superconductivity With Sum Rules
J. J. Rodriguez - Nunez, C. E. Cordeiro, A. Delfino
We use the moment approach of Nolting (exact sum rules) (Z. Physik 255, 25 (1972)) for the attractive Hubbard model in the superconducting phase. Our diagonal and off - diagonal sp…
How reliable is the mean-field Nuclear Matter description for supporting Chiral Effective Lagrangians?
A. Delfino, M. Malheiro, T. Frederico
The link between non-linear chiral effective Lagrangians and the Walecka model description of bulk nuclear matter [1] is questioned. This fact is by itself due to the Mean Field Ap…