402 citations · 3.3k across the 52 of their papers we have counts for
6 papers · 1 filter
Vorticity generation in the Universe: A perturbative approach
Giulia Cusin, Vittorio Tansella, Ruth Durrer
We compute the generation of vorticity from velocity dispersion in the dark matter fluid. For dark matter at zero temperature Helmholtz's theorem dictates that no vorticity is gene…
Stability issues of nonlocal gravity during primordial inflation
Enis Belgacem, Giulia Cusin, Stefano Foffa +2
We study the cosmological evolution of some nonlocal gravity models, when the initial conditions are set during a phase of primordial inflation. We examine in particular three mode…
Are we living near the center of a local void?
Giulia Cusin, Cyril Pitrou, Jean-Philippe Uzan
The properties of the cosmic microwave background (CMB) temperature and polarisation anisotropies measured by a static, off-centered observer located in a local spherically symmetr…
On scale-free extensions of massive (bi-)gravity
Giulia Cusin, Nima Khosravi, Johannes Noller
We discuss a scale-free model of bigravity, in which the mass parameter of the standard bigravity potential is promoted to a dynamical scalar field. This modification retains the g…
Conformal symmetry and nonlinear extensions of nonlocal gravity
Giulia Cusin, Stefano Foffa, Michele Maggiore +1
We study two nonlinear extensions of the nonlocal gravity theory. We extend this theory in two different ways suggested by conformal symmetry, either replacing $\Bo…
Non-local gravity with a Weyl-square term
Giulia Cusin, Stefano Foffa, Michele Maggiore +1
Recent work has shown that modifications of General Relativity based on the addition to the action of a non-local term , or on the addition to the equations of motio…