Published March 15, 1990
| Version v1
Journal article
Quark matter with neutral pion condensate
Creators
- 1. Institute of Nuclear Physics, Krakow (Poland)
Description
The neutral pion condensate in a chirally broken phase of quark matter is studied in the sigma model with quark and meson degrees of freedom. We find that above a critical quark mass of about 200 MeV the pion-condensed phase is the ground state of the system. In this phase the up and down quark Fermi seas are oppositely polarized along the direction of the pion field wave vector. We calculate the net spin density of the up and down Fermi seas and we estimate the magnetization of the system. Astrophysical implications are briefly discussed. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters, (Section) B
- Journal Volume
- 237
- Journal Issue
- 2
- Series
- Phys. Lett., B.
- Journal Page Range
- 159-163
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21048467
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CHIRAL SYMMETRY; CHIRALITY; ENERGY DENSITY; FERMI GAS; GROUND STATES; LAGRANGIAN FIELD THEORY; MAGNETIZATION; NEUTRON STARS; PION CONDENSATION; PIONS NEUTRAL; QUARK MATTER; QUARK-HADRON INTERACTIONS; QUARKS; SIGMA MODEL; SPIN ORIENTATION; SYMMETRY BREAKING
- Descriptors DEC
- BOSON-EXCHANGE MODELS; BOSONS; ELEMENTARY PARTICLES; ENERGY LEVELS; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MATHEMATICAL MODELS; MATTER; MESONS; ORIENTATION; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; PERIPHERAL MODELS; PHYSICAL PROPERTIES; PIONS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; STARS; SYMMETRY