Color, spin, and flavor diffusion in quark-gluon plasmas

Journal Article · Mon May 09 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.3013· OSTI ID:7068455

Heiselberg, H ^[1]

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1. Nuclear Science Division, MS 70A-3307, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

In weakly interacting quark-gluon plasmas diffusion of color is found to be much slower than the diffusion of spin and flavor because color is easily exchanged by the gluons in the very singular forward scattering processes. If the infrared divergence is cut off by a magnetic mass, [ital m][sub mag][similar to][alpha][sub [ital s]][ital T], the color diffusion is [ital D][sub color][similar to][[alpha][sub [ital a]]ln(1/[alpha][sub [ital s]])[ital T]][sup [minus]1], a factor [alpha][sub [ital s]] smaller than spin and flavor diffusion. A similar effect is expected in electroweak plasmas above [ital M][sub [ital W]] due to [ital W][sup [plus minus]] exchanges. The color conductivity in quark-gluon plasmas and the electrical conductivity in electroweak plasmas are correspondingly small in relativistic heavy ion collisions and the very early Universe.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7068455
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:19; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BOSONS
CHARGED-PARTICLE REACTIONS
COLOR
DIFFUSION
ELEMENTARY PARTICLES
FLAVOR
GLUONS
HEAVY ION REACTIONS
MATTER
NUCLEAR REACTIONS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PLASMA
POSTULATED PARTICLES
QUARK MATTER
SPIN