3 papers
math.SP2002
Eigenmodes of Lens and Prism Spaces
Roland Lehoucq, Jean-Philippe Uzan, Jeffrey Weeks
Cosmologists are taking a renewed interest in multiconnected spherical 3-manifolds (spherical spaceforms) as possible models for the physical universe. To understand the formation…
gr-qc2000
New Developments in the Search for the Topology of the Universe
Jean-Philippe Uzan, Roland Lehoucq, Jean-Pierre Luminet
Multi-connected Universe models with space idenfication scales smaller than the size of the observable universe produce topological images in the catalogs of cosmic sources. In thi…
astro-ph1998
Nuclear Photodisintegration at High Redshifts by Gamma-Ray Blazars
M. Casse, E. Vangioni-Flam, R. Lehoucq
We analyse the photodisintegration of nuclei near the center of blazars, in particular PKS 0528+134. We show that this process could explain the recent observation of a high Al/Si…