Published June 1989 | Version v1
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The nuclear equation of state in effective relativistic field theories and pion yields in heavy-ion collisions

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Description

Within the framework of relativistic field theory for nucleons, deltas, scalar and vector mesons, a systematic study of the nuclear equation of state and its relation to pion yields in heavy-ion collisions is presented. Not the compressibility but the effective nucleon mass at normal nuclear density turns out to be the most sensitive parameter. Effects from vaccum fluctuations are well modelled within the mean-field no-sea approximation by self-interaction terms for the scalar meson field. Incomplete thermalization in the fireball may be the reason for the low pion yields observed in heavy-ion collisions. (orig.)

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MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
35 p.
Report number
GSI--89-50(prepr.)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
20071102
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
COMPRESSIBILITY; DEEP INELASTIC HEAVY ION REACT; DELTA-1232 BARYONS; EFFECTIVE MASS; EQUATIONS OF STATE; FIELD EQUATIONS; FIREBALL MODEL; FLUCTUATIONS; HEAVY ION REACTIONS; LAGRANGE EQUATIONS; LAGRANGIAN FIELD THEORY; MEAN-FIELD THEORY; NUCLEAR FIREBALL MODEL; NUCLEAR MATTER; NUCLEAR REACTION YIELD; NUCLEAR TEMPERATURE; NUCLEONS; OMEGA-783 MESONS; ONE-DIMENSIONAL CALCULATIONS; PIONIZATION; PIONS; RELATIVISTIC RANGE; RENORMALIZATION; SCALAR FIELDS; SELF-ENERGY; SHOCK WAVES; THERMAL EQUILIBRIUM; THERMALIZATION; VACUUM STATES; VECTOR FIELDS; WALECKA MODEL
Descriptors DEC
BARYONS; BOSONS; DELTA BARYONS; DIFFERENTIAL EQUATIONS; ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; EQUATIONS; EQUILIBRIUM; FERMIONS; FIELD THEORIES; HADRONS; MASS; MATHEMATICAL MODELS; MATTER; MECHANICAL PROPERTIES; MESONS; MULTIPLE PRODUCTION; N*BARYONS; NUCLEAR MODELS; NUCLEAR REACTIONS; PARTIAL DIFFERENTIAL EQUATIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SLOWING-DOWN; VARIATIONS; VECTOR MESONS