Pauli-blocking effect in a quark cluster model

DOI10.1016/S0375-9474(03)01434-9zbMATH Open1040.81561arXivhep-ph/0209247OpenAlexW1828066532MaRDI QIDQ1811847

Publication date: 17 June 2003

Published in: Nuclear Physics. A (Search for Journal in Brave)

Abstract: Pauli-Blocking effect on the kinetic term is investigated by employing the quark cluster model. The effect can be understood by the change of the degrees of the mixing between the incoming wave and the 0

e l l

state of the inter-cluster wave function, which can be expressed by a potential which is highly nonlocal. We look into the properties of this effect by comparing equivalent local potentials. In the channel where the Pauli-blocking effect is small, the on-shell equivalent local potential simulates the nonlocal potential well even for the off-shell behavior. On the other hand, the off-shell behavior is very different from the original one where the effect is large. This off-shell behavior, however, can well be simulated by considering the nonlocal matrix elements only between the

0 s

state and the other states. The energy dependent potentials are also constructed and found to be helpful to understand the energy dependence of the effect.

Full work available at URL: https://arxiv.org/abs/hep-ph/0209247

zbMATH Keywords

WKB method nonlocal potential on-shell equivalent local potential

Mathematics Subject Classification ID

Nuclear physics (81V35) Semiclassical techniques, including WKB and Maslov methods applied to problems in quantum theory (81Q20)