arXiv 0810.05352008-10astro-phgr-qc

Modification to the Luminosity Distance Redshift Relation in Modified Gravity Theories

Éanna É. Flanagan, Eran Rosenthal, Ira M. Wasserman

备注：: 15 pages, we discuss in more detail how the luminosity distance expression can be used to differentiate among various theories of gravity
发表信息：: Phys.Rev.D79:044032,2009
DOI：: 10.1103/PhysRevD.79.044032

英文摘要：

We derive an expression for the luminosity distance as a function of redshift for a flat Robertson-Walker spacetime perturbed by arbitrary scalar perturbations possibly produced by a modified gravity theory with two different scalar perturbation potentials. Measurements of the luminosity distance as function of redshift provide a constraint on a combination of the scalar potentials and so they can complement weak lensing and other measurements in trying to distinguish among the various alternative theories of gravity.

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