5 papers
Back Reaction from Walls
Enea Di Dio, Marc Vonlanthen, Ruth Durrer
We study the distance-redshift relation in a universe filled with 'walls' of pressure-less dust separated by under dense regions. We show that as long as the density contrast of th…
A large scale coherent magnetic field: interactions with free streaming particles and limits from the CMB
Julian Adamek, Ruth Durrer, Elisa Fenu +1
We study a homogeneous and nearly-isotropic Universe permeated by a homogeneous magnetic field. Together with an isotropic fluid, the homogeneous magnetic field, which is the prima…
Model-independent cosmological constraints from the CMB
Marc Vonlanthen, Syksy Rasanen, Ruth Durrer
We analyse CMB data in a manner which is as model-independent as possible. We encode the effects of late-time cosmology into a single parameter which determines the distance to the…
Braneworlds, graviton production, dynamical Casimir effect
Ruth Durrer, Marcus Ruser, Marc Vonlanthen +1
If our Universe is a 3+1 brane in a warped 4+1 dimensional bulk so that its expansion can be understood as the motion of the brane in the bulk, the time dependence of the boundary…
Graviton production in anti-de Sitter braneworld cosmology: A fully consistent treatment of the boundary condition
Marcus Ruser, Ruth Durrer, Marc Vonlanthen +1
In recent work by two of us, [Durrer & Ruser, PRL 99, 071601 (2007); Ruser & Durrer PRD 76, 104014 (2007)], graviton production due to a moving spacetime boundary (braneworld) in a…