540 citations · 5.4k across the 61 of their papers we have counts for
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Non-Gaussian Signatures from the Postinflationary Early Universe
Alessandra Silvestri, Mark Trodden
We consider contributions to non-Gaussianity of the Cosmic Microwave Background (CMB) from remnants of post-inflationary phase transitions in the very early universe. Such signatur…
Searching for modified growth patterns with tomographic surveys
Gong-Bo Zhao, Levon Pogosian, Alessandra Silvestri +1
In alternative theories of gravity, designed to produce cosmic acceleration at the current epoch, the growth of large scale structure can be modified. We study the potential of upc…
The pattern of growth in viable f(R) cosmologies
Levon Pogosian, Alessandra Silvestri
We study the evolution of linear perturbations in metric f(R) models of gravity and identify a potentially observable characteristic scale-dependent pattern in the behavior of cosm…
Dynamics of Linear Perturbations in f(R) Gravity
Rachel Bean, David Bernat, Levon Pogosian +2
We consider predictions for structure formation from modifications to general relativity in which the Einstein-Hilbert action is replaced by a general function of the Ricci scalar.…
Modified-Source Gravity and Cosmological Structure Formation
Sean M. Carroll, Ignacy Sawicki, Alessandra Silvestri +1
One way to account for the acceleration of the universe is to modify general relativity, rather than introducing dark energy. Typically, such modifications introduce new degrees of…