2024-03-29T06:11:50Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/202792017-01-16T09:59:23Zcom_10261_49com_10261_4col_10261_175
Transverse gravity versus observations
Álvarez-Vázquez, Enrique
Fernández Faedo, Antón
López-Villarejo, J. J.
Gravity
Modified gravity
21 pages.-- Pre-print archive.
Theories of gravity invariant under those diffeomorphisms generated by transverse vectors, ∂μξμ = 0 are considered. Such theories are dubbed transverse, and differ from General Relativity in that the determinant of the metric, g, is a transverse scalar. We comment on diverse ways in which these models can be constrained using a variety of observations. Generically, an additional scalar degree of freedom mediates the interaction, so the usual constraints on scalar-tensor theories have to be imposed. If the purely gravitational part is Einstein-Hilbert but the matter action is transverse, the models predict that the three a priori different concepts of mass (gravitational active and gravitational passive as well as inertial) are not equivalent anymore. These transverse deviations from General Relativity are therefore tightly constrained, actually correlated with existing bounds on violations of the equivalence principle, local violations of Newton's third law and/or violation of Local Position Invariance.
2010-01-22T14:04:53Z
2010-01-22T14:04:53Z
2009-07
artículo
Journal of Cosmology and Astropartcile Physics 07(002): (2009)
1475-7516 (Online)
http://hdl.handle.net/10261/20279
10.1088/1475-7516/2009/07/002
eng
http://dx.doi.org/10.1088/1475-7516/2009/07/002
openAccess
Institute of Physics Publishing