RT Journal Article
T1 Cosmological tensor perturbations in theories beyond Lambda CDM
A1 Abdelwahab, Mohamed
A1 Cruz Dombriz, Álvaro de la
A1 Dunsby, P.K.S.
AB We study for the first time a complete analysis of the imprint of tensor anisotropies on the Cosmic Microwave Background for a class of f(R) gravity theories within the CAMB-PPF framework. Herein we present the most relevant equations, both for the cosmological background and gravitational wave perturbations, taking care to include all effects which arise from f(R) modifications. We find that that the dominant contribution to deviations from General Relativity in the temperature and polarization spectra can be attributed to modifications in the background. This demonstrates the importance of using the correct background in perturbative studies of f(R) gravity.
PB American Institute of Physics
SN 0094-243x
YR 2013
FD 2013
LK https://hdl.handle.net/20.500.14352/35118
UL https://hdl.handle.net/20.500.14352/35118
LA eng
NO © 2013 American Institute of Physics. Conference on Multiverse and Fundamental Cosmology (Multicosmofun) (12. 2013. Szczecin, POLAND). AdlCD acknowledges financial support from URC and NRF (South Africa), MICINN (Spain) projects numbers FIS2011-23000, FPA2011-27853-C02-01 and Consolider-Ingenio MULTIDARK CSD2009-00064.
NO NRF (South Africa)
NO URC (South Africa)
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 9 abr 2025