Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Weakly interacting massive particle densities in decaying-particle-dominated cosmology
AU - McDonald, John
PY - 1991/2/15
Y1 - 1991/2/15
N2 - We consider the present cosmological density of weakly interacting massive particles (WIMP's) in the context of models where the energy density is dominated by decaying massive particles, such that WIMP's freeze out of chemical equilibrium during the massive-particle-dominated era. An expression for the density of WIMP's is derived by a generalization of the Lee-Weinberg argument for the density of heavy neutrinos in the standard cosmological model.
AB - We consider the present cosmological density of weakly interacting massive particles (WIMP's) in the context of models where the energy density is dominated by decaying massive particles, such that WIMP's freeze out of chemical equilibrium during the massive-particle-dominated era. An expression for the density of WIMP's is derived by a generalization of the Lee-Weinberg argument for the density of heavy neutrinos in the standard cosmological model.
KW - SUPERSTRING MODELS
KW - DARK MATTER
KW - UNIVERSE
KW - SUPERSYMMETRY
KW - BREAKING
KW - AXIONS
KW - SCALE
U2 - 10.1103/PhysRevD.43.1063
DO - 10.1103/PhysRevD.43.1063
M3 - Journal article
VL - 43
SP - 1063
EP - 1068
JO - Physical Review D
JF - Physical Review D
SN - 0556-2821
IS - 4
ER -