Two-color QCD at nonzero quark number density.

Journal Article · Thu Nov 01 00:00:00 EST 2001 · Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRevD.64.094505· OSTI ID:949294

Kogut, J B; Sinclair, D K; Hands, S J; Morrison, S E

We have simulated two-color four-flavor QCD at nonzero chemical potential {mu} for quark number. Simulations were performed on 8{sup 4} and 12{sup 3}x24 lattices. Clear evidence was seen for the formation of a colorless diquark condensate which breaks quark number spontaneously, for {mu}>{mu}{sub c}{approx}m{sub {pi}}/2. The transition appears to be second order. We have measured the spectrum of scalar and pseudoscalar bosons which shows clear evidence for the expected Goldstone boson. Our results are in qualitative agreement with those from effective Lagrangians for the potential Goldstone excitations of this theory.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 949294
• Report Number(s): ANL-HEP-PR-01-028; TRN: US1003474
• Journal Information: Phys. Rev. D, Vol. 64, Issue 9 ; Nov. 1, 2001
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
CONDENSATES
GOLDSTONE BOSONS
PSEUDOSCALARS
QUANTUM CHROMODYNAMICS
QUARKS
SCALARS