Causality and relativistic effects in intranuclear cascade calculations

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.29.2146· OSTI ID:6528048

Kodama, T; Duarte, S B; Chung, K C; Donangelo, R; Nazareth, R A.M.S.

Two main goals are pursued in this work. The first one is concerned with the relativistic effects in high energy nuclear collisions, when noninvariance of simultaneity is taken into account. It is shown that the time ordering of nucleon-nucleon collisions is quite different for different observers, giving in some cases noninvariant final results for intranuclear cascade calculations. In particular, we have shown an example of such a case, in which the intranuclear cascade simulation, depending on the reference frame, presents a kind of density instability caused by a specific time ordering of collision events. The second one is to propose a new intranuclear cascade calculation, using a causality preserving scheme, which minimizes this kind of relativistic effect. It is verified that the causality preserving intranuclear cascade prescription essentially recovers the relativistic invariance.

• Research Organization: Departamento de Fisica Nuclear e Altas Energias, Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brasil
• OSTI ID: 6528048
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOLTZMANN EQUATION
CAUSALITY
CHARGED-PARTICLE REACTIONS
DIFFERENTIAL EQUATIONS
ENERGY RANGE
EQUATIONS
HADRON-HADRON INTERACTIONS
HEAVY ION REACTIONS
INTERACTIONS
MATTER
MECHANICS
NUCLEAR CASCADES
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
PION CONDENSATION
QUANTUM MECHANICS
RELATIVISTIC RANGE