<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints"^^ . "The effective anisotropic stress eta = − Phi/Psi\t is a key variable in the characterisation of the physical\r\norigin of the dark energy. It is however important to use a fully model-independent approach when\r\nmeasuring eta to avoid introducing a theoretical bias into the results. We forecast the precision\r\nwith which future large surveys can determine eta in a way that only relies on directly observable\r\nquantities, using the joint combination of Galaxy Clustering, Weak Lensing and Supernovae probes.\r\nAmong the results, we find that a future large scale survey can constrain eta to within 10% if k-independent,\r\nand to within 60% if it is restricted to follow the Horndeski model. In order to\r\nfind current constraints on eta data for the growth rate f sigma_8 coming from Redshift Space Distortion\r\nmeasurements, observations of the Hubble expansion H(z), and a constraint for the quantity\r\nP2 defined as the expectation value of the ratio between galaxy-galaxy and galaxy-velocity cross\r\ncorrelations, have been used. We find a value at z = 0.32 of eta = 0.646 +/- 0.678, in agreement with\r\nthe predicted value for the LCDM model. Finally, we produce a cosmological exclusion plot for\r\nmodified gravity in analogy with the exclusion plots produced in laboratory experiments."^^ . "2016" . . . . . . . "Alejandro"^^ . "Guarnizo Trilleras"^^ . "Alejandro Guarnizo Trilleras"^^ . . . . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (Other)"^^ . . . . . . "preview.jpg"^^ . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (Other)"^^ . . . . . . "medium.jpg"^^ . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (Other)"^^ . . . . . . "small.jpg"^^ . . . "A Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints (PDF)"^^ . . . "PhD_Thesis_Alejandro_Guarnizo.pdf"^^ . . "HTML Summary of #20369 \n\nA Model-Independent Approach to Dark Energy Cosmologies: Current and Future Constraints\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .