52 citations · 139 across the 8 of their papers we have counts for
8 papers
Dynamical Four-Form Fields
Ufuk Aydemir, Luca Grisa, Lorenzo Sorbo
We present an example of a gauge-invariant Lagrangian that contains four derivatives and describes one massive, non-ghostlike, degree of freedom.
Tachyonic Quintessence and a Preferred Direction in the Sky
Luca Grisa, Lorenzo Sorbo
We show that quintessence, when it is described by a tachyonic field, can amplify a tiny primordial gradient generating a preferred direction in the sky. In its simplest realizatio…
Pauli-Fierz Gravitons on Friedmann-Robertson-Walker Background
Luca Grisa, Lorenzo Sorbo
We derive the Hamiltonian describing Pauli-Fierz massive gravitons on a flat Friedmann-Robertson-Walker (FRW) cosmology in a particular, non-generic effective field theory. The cos…
Lorentz-Violating Massive Gravity in Curved Space
Luca Grisa
In models of modified gravity, extra degrees of freedom usually appear. They must be removed from the spectrum because they may indicate the presence of instabilities and because o…
Dressed Domain Walls and Holography
Luca Grisa, Oriol Pujolas
The cutoff version of the AdS/CFT correspondence states that the Randall Sundrum scenario is dual to a Conformal Field Theory (CFT) coupled to gravity in four dimensions. The gravi…
Delocalization from Anomaly Inflow and Intersecting Brane Dynamics
Luca Grisa
We study intersecting D-brane models, that describe at low energies a two dimensional chiral fermion theory localized at the intersection. The fermions are coupled to gauge fields…