2026-06-26T20:57:31Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/84162023-08-26T02:02:22Zcom_20.500.14352_14col_20.500.14352_15

Delgado Miravet, Alfredo López Maroto, Antonio 2023-06-17T09:13:08Z 2023-06-17T09:13:08Z 2021-06-28 2470-0010 10.1103/PhysRevD.103.123546 https://hdl.handle.net/20.500.14352/8416 http://dx.doi.org/10.1103/PhysRevD.103.123546 https://journals.aps.org/ We study the effects of ultralight vector field (ULVF) dark matter on gravitational wave propagation. We find that the coherent oscillations of the vector field induce an anisotropic suppression of the gravitational wave amplitude as compared to the standard cosmology prediction. The effect is enhanced for smaller vector field masses and peaks for modes around k = H-0/root a(H = m). The suppression is negligible for astrophysically generated gravitational waves but could be sizable for primordial gravity waves. We discuss the possibility of detecting such an effect on the tensor power spectrum with future cosmic microwave background B-mode polarization detectors. We find that for the sensitivity of the upcoming LiteBIRD mission, the correction to the tensor power spectrum at decoupling time could be distinguishable from that of ACDM for ULVF masses m less than or similar to 10(-26) eV and sufficiently large abundances. eng open access Imprint of ultralight vector fields on gravitational wave propagation journal article