UNIGE document Preprint
previous document  unige:1096  next document
add to browser collection

CMB anisotropies from acausal scaling seeds

Scodeller, Sandro
Submitted to . 2009
Description 9 p.
Abstract We investigate models where structure formation is initiated by scaling seeds: We consider rapidly expanding relativistic shells of energy and show that they can fit current CMB and large scale structure data if they expand with super-luminal velocities. These acausally expanding shells provide a viable alternative to inflation for cosmological structure formation with the same minimal number of parameters to characterize the initial fluctuations. Causally expanding shells alone cannot fit present data. Hybrid models where causal shells and inflation are mixed also provide good fits.
Note Soumis dans : Physical Review. D
Full text
Preprint (399 Kb) - public document Free access
(ISO format)
SCODELLER, Sandro, KUNZ, Martin, DURRER, Ruth. CMB anisotropies from acausal scaling seeds. 2009. https://archive-ouverte.unige.ch/unige:1096

360 hits



Deposited on : 2009-03-06

Export document
Format :
Citation style :