184 citations · 570 across the 9 of their papers we have counts for
4 papers · 1 filter
DBI Galileons in the Einstein Frame: Local Gravity and Cosmology
Miguel Zumalacarregui, Tomi S. Koivisto, David F. Mota
It is shown that a disformally coupled theory in which the gravitational sector has the Einstein-Hilbert form is equivalent to a quartic DBI Galileon Lagrangian, possessing non-lin…
Screening Modifications of Gravity through Disformally Coupled Fields
Tomi S. Koivisto, David F. Mota, Miguel Zumalacarregui
It is shown that extensions to General Relativity, which introduce a strongly coupled scalar field, can be viable if the interaction has a non-conformal form. Such disformal coupli…
Modified Entropic Gravity and Cosmology
Miguel Zumalacarregui
It has been recently proposed that gravity might be an entropic force. Although a well defined fundamental description for such a mechanism is still lacking, it is still possible t…
Tension in the Void: Cosmic Rulers Strain Inhomogeneous Cosmologies
Miguel Zumalacarregui, Juan Garcia-Bellido, Pilar Ruiz-Lapuente
New constraints on inhomogeneous Lemaître-Tolman-Bondi (LTB) models alternative to Dark Energy are presented, focusing on adiabatic profiles with space-independent Big Bang and bar…