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Cosmological Tracking Solutions
Paul J. Steinhardt, Limin Wang, Ivaylo Zlatev
A substantial fraction of the energy density of the universe may consist of quintessence in the form of a slowly-rolling scalar field. Since the energy density of the scalar field…
Cosmological Signature of New Parity-Violating Interactions
Arthur Lue, Limin Wang, Marc Kamionkowski
Does Nature yield any manifestations of parity violation other than those observed in weak interactions? A map of the cosmic microwave background (CMB) temperature and polarization…
Quintessence, Cosmic Coincidence, and the Cosmological Constant
Ivaylo Zlatev, Limin Wang, Paul J. Steinhardt
Recent observations suggest that a large fraction of the energy density of the universe has negative pressure. One explanation is vacuum energy density; another is quintessence in…
Cluster Abundance Constraints on Quintessence Models
Limin Wang, Paul J. Steinhardt
The abundance of rich clusters is a strong constraint on the mass power spectrum. The current constraint can be expressed in the form where is the $…
Resolving the Cosmological Missing Energy Problem
Greg Huey, Limin Wang, R. Dave +2
Some form of missing energy may account for the difference between the observed cosmic matter density and the critical density. Two leading candidates are a cosmological constant a…