172 citations · 493 across the 6 of their papers we have counts for
6 papers
Mimetic gravity as DHOST theories
David Langlois, Michele Mancarella, Karim Noui +1
We show that theories of mimetic gravity can be viewed as degenerate higher-order scalar-tensor (DHOST) theories that admit an extra local (gauge) symmetry in addition to the usual…
An effective description of dark energy: from theory to phenomenology
Michele Mancarella
In the last decades, a cosmological model that fits observations through a vast range of scales emerged. It goes under the name of CDM. However, there are still challenging ques…
Effective Description of Higher-Order Scalar-Tensor Theories
David Langlois, Michele Mancarella, Karim Noui +1
Most existing theories of dark energy and/or modified gravity, involving a scalar degree of freedom, can be conveniently described within the framework of the Effective Theory of D…
Weakening Gravity on Redshift-Survey Scales with Kinetic Matter Mixing
Guido D'Amico, Zhiqi Huang, Michele Mancarella +1
We explore general scalar-tensor models in the presence of a kinetic mixing between matter and the scalar field, which we call Kinetic Matter Mixing. In the frame where gravity is…
Effective Theory of Dark Energy at Redshift Survey Scales
Jérôme Gleyzes, David Langlois, Michele Mancarella +1
We explore the phenomenological consequences of general late-time modifications of gravity in the quasi-static approximation, in the case where cold dark matter is non-minimally co…
Effective Theory of Interacting Dark Energy
Jérôme Gleyzes, David Langlois, Michele Mancarella +1
We present a unifying treatment of dark energy and modified gravity that allows distinct conformal-disformal couplings of matter species to the gravitational sector. In this very g…