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- Centre National de la Recherche ScientifiqueFR351 papers
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43 papers · 1 filter
Forecasting Cosmic Doomsday from CMB/LSS Cross-Correlations
Jaume Garriga, Levon Pogosian, Tanmay Vachaspati
A broad class of dark energy models, which have been proposed in attempts at solving the cosmological constant problems, predict a late time variation of the equation of state with…
A New Nucleosynthesis Constraint on the Variation of G
Craig J. Copi, Adam N. Davis, Lawrence M. Krauss
Big Bang Nucleosynthesis can provide, via constraints on the expansion rate at that time, limits on possible variations in Newton's Constant, . The original analyses were perfor…
Imaging the Sunyaev Zel'dovich Effect using ACBAR on Viper
A. K. Romer, P. L. Gomez, C. M. Cantalupo +13
During 2001 and 2002, observations of several X-ray bright clusters of galaxies were conducted using the ACBAR Bolometer Array on the South Pole Viper telescope. A multi-frequency…
Intracluster Planetary Nebulae in Clusters and Groups
John J. Feldmeier, Robin B. Ciardullo, George H. Jacoby +2
We present the results from multiple surveys for intracluster planetary nebulae (IPNe) in nearby galaxy clusters and groups. We find that in the case of clusters, our observations…
Constraining the Topology of the Universe
Neil J. Cornish, David N. Spergel, Glenn D. Starkman +1
The first year data from the Wilkinson Microwave Anisotropy Probe are used to place stringent constraints on the topology of the Universe. We search for pairs of circles on the sky…
The volume of separable states is super-doubly-exponentially small
Stanislaw Szarek
In this note we give sharp estimates on the volume of the set of separable states on N qubits. In particular, the magnitude of the "effective radius" of that set in the sense of vo…