The Effects of Gravitational Slip on the Higher-Order Moments of the Matter Distribution (2009)
Cosmological departures from general relativity offer a possible explanation for the cosmic acceleration. To linear order, these departures (quantified by the model-independent parameter $\varpi$,...
Lensed Cosmic Microwave Background Constraints on Post-General Relativity Parameters (2009)
Serra, Paolo, Cooray, Asantha, Daniel, Scott F., Caldwell, Robert, Melchiorri, Alessandro
The constraints on departures from general relativity (GR) at cosmological length scales due to cosmic microwave background (CMB) data are discussed. The departure from GR is measured by the ratio,...
A Multi-Parameter Investigation of Gravitational Slip (2009)
Daniel, Scott F., Caldwell, Robert R., Cooray, Asantha, Serra, Paolo, Melchiorri, Alessandro
A detailed analysis of gravitational slip, a new post-general relativity cosmological parameter characterizing the degree of departure of the laws of gravitation from general relativity on...
Large Scale Structure as a Probe of Gravitational Slip (2008)
Daniel, Scott F., Caldwell, Robert R., Cooray, Asantha, Melchiorri, Alessandro
A new time-dependent, scale-independent parameter, \varpi, is employed in a phenomenological model of the deviation from General Relativity in which the Newtonian and longitudinal gravitational...
Consequences of a Cosmic Scalar with Kinetic Coupling to Curvature (2007)
Daniel, Scott F., Caldwell, Robert R.
The classical gravitational theory of a scalar field with a gradient coupling to the Ricci tensor is examined. This is a scalar-vector-tensor gravitational theory, but in the case that the coupling...