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34 papers · 1 filter
The cosmological constant and general isocurvature initial conditions
R. Trotta, A. Riazuelo, R. Durrer
We investigate in detail the question whether a non-vanishing cosmological constant is required by present-day cosmic microwave background and large scale structure data when gener…
QCD and Nuclei
Mannque Rho
I discuss how the fundamental theory of strong interactions given by QCD can be exploited to make accurate predictions for the solar fusion processes involving few-nucleon systems…
Asymmetric evolving random networks
Stephane Coulomb, Michel Bauer
We generalize the poissonian evolving random graph model of Bauer and Bernard to deal with arbitrary degree distributions. The motivation comes from biological networks, which are…
Localization properties of the anomalous diffusion phase in the directed trap model and in the Sinai diffusion with bias
Cecile Monthus
We study the anomalous diffusion phase with which exists both in the Sinai diffusion at small bias, and in the related directed trap model presenting a large dist…
Simulating Cosmic Microwave Background maps in multi-connected spaces
Alain Riazuelo, Jean-Philippe Uzan, Roland Lehoucq +1
This article describes the computation of cosmic microwave background anisotropies in a universe with multi-connected spatial sections and focuses on the implementation of the topo…
Combinatorics of Hard Particles on Planar Graphs
J. Bouttier, P. Di Francesco, E. Guitter
We revisit the problem of hard particles on planar random tetravalent graphs in view of recent combinatorial techniques relating planar diagrams to decorated trees. We show how to…