Effect of exchange-energy corrections on self-consistent meson masses and on the equation of state of nuclear matter

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.1648· OSTI ID:6614180

Kapusta, J I

An estimate is made of the effect of expanding about the full nucleon and meson propagators as well as the mean meson fields in certain model renormalizable relativistic field theories of nuclear matter. Meson masses are determined self-consistently by satisfying, at zero momentum only, the Schwinger-Dyson equations which result when the energy functional is truncated at the two-loop level. The tachyonic pion problem of the standard mean field expansion is eliminated but the opposite problem of a far too massive pion in normal nuclear matter arises.

• Research Organization: Theoretical Division, Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
• OSTI ID: 6614180
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653002* -- Nuclear Theory-- Nuclear Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CORRECTIONS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
EXCHANGE INTERACTIONS
FIELD THEORIES
HADRONS
INTERACTIONS
MASS FORMULAE
MATTER
MESONS
NUCLEAR MATTER
POSTULATED PARTICLES
PROPAGATOR
RENORMALIZATION
SCHWINGER FUNCTIONAL EQUATIONS
TACHYONS