Threshold of pion condensation

Journal Article · Wed Oct 15 04:00:00 EDT 1975 · Phys. Rev., D, v. 12, no. 8, pp. 2230-2236

DOI:https://doi.org/10.1103/PhysRevD.12.2230· OSTI ID:4063677

Bertsch, G; Johnson, M B

The threshold density for pion condensation in neutron matter is determined with a model including nuclear interactions and the $delta$ resonance in $pi$-nucleon scattering. Depending on the magnitude of N-$delta$ correlations, pion condensation can have a threshold as low as 0.1 neutrons/ fm$sup 3$ or not occur at all. Applying the model to nuclear matter, it was found that in the absence of N-$delta$ correlations physical pions have a very large effective mass. With N-$delta$ correlations, these effects are diminished, but pion condensation could still occur at twice normal nuclear matter density. (auth)

• Research Organization: Michigan State Univ., East Lansing
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-027793
• OSTI ID: 4063677
• Journal Information: Phys. Rev., D, v. 12, no. 8, pp. 2230-2236, Journal Name: Phys. Rev., D, v. 12, no. 8, pp. 2230-2236; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

*NUCLEAR MATTER-- PIONS
643502*
CORRELATIONS
DELTA-1236 RESONANCES
EFFECTIVE MASS
N69220* --Physics (Nuclear)--Nuclear Theory--Nuclear Matter
NUCLEAR REACTIONS
PION REACTIONS
THRESHOLD ENERGY