Publications (26)
Supersymmetry breaking with quasi-localized fields in orbifold field theories
G. V. Gersdorff, L. Pilo, M. Quiros +2
We study the Scherk-Schwarz supersymmetry breaking in five-dimensional orbifold theories with five-dimensional fields which are not strictly localized on the boundaries (quasi-loca…
Problems on invariants of knots and 3-manifolds
J. E. Andersen, N. Askitas, D. Bar-Natan +57
This is a list of open problems on invariants of knots and 3-manifolds with expositions of their history, background, significance, or importance. This list was made by editing ope…
Degrees of Freedom in Massive Gravity
D. Comelli, M. Crisostomi, F. Nesti +1
We study in a systematic way a generic nonderivative (massive) deformation of general relativity using the Hamiltonian formalism. The number of propagating degrees of freedom is an…
Supersymmetry from Boundary Conditions
G. von Gersdorff, L. Pilo, M. Quiros +2
We study breaking and restoration of supersymmetry in five-dimensional theories by determining the mass spectrum of fermions from their equations of motion. Boundary conditions can…
Bosonization at Finite Temperature and Anyon Condensation
A. Liguori, M. Mintchev, L. Pilo
An operator formalism for bosonization at finite temperature and density is developed. We treat the general case of anyon statistics. The exact -point correlation functions, sat…
Living with ghosts in Horava-Lifshitz gravity
S. Ramazanov, F. Arroja, M. Celoria +2
We consider the branch of the projectable Horava-Lifshitz model which exhibits ghost instabilities in the low energy limit. It turns out that, due to the Lorentz violating structur…
Running and Matching from 5 to 4 Dimensions
R. Contino, L. Pilo, R. Rattazzi +1
We study 5 dimensional grand-unified theories in an orbifold geometry by the method of effective field theory: we match the low and high energy theories by integrating out at 1-loo…
Fermions and Supersymmetry Breaking in the Interval
G. v. Gersdorff, L. Pilo, M. Quiros +2
We study fermions, such as gravitinos and gauginos in supersymmetric theories, propagating in a five-dimensional bulk where the fifth dimensional component is assumed to be an inte…
On the Amount of Gravitational Waves from Inflation
L. Pilo, A. Riotto, A. Zaffaroni
The curvaton and the inhomogeneous reheating scenarios for the generation of the cosmological curvature perturbation on large scales represent an alternative to the standard slow-r…
The Fate of the Radion in Models with Metastable Graviton
L. Pilo, R. Rattazzi, A. Zaffaroni
We clarify some general issues in models where gravity is localized at intermediate distances. We introduce the radion mode, which is usually neglected, and we point out that its r…
FRW Cosmological Perturbations in Massive Bigravity
D. Comelli, M. Crisostomi, L. Pilo
Cosmological perturbations of FRW solutions in ghost free massive bigravity, including also a second matter sector, are studied in detail. At early time, we find that sub horizon e…
Gauge Quintessence
L. Pilo, D. A. J. Rayner, A. Riotto
We discuss a new model of quintessence in which the quintessence field is identified with the extra-component of a gauge field in a compactified five-dimensional theory. We show th…
Graviton loops and brane observables
R. Contino, L. Pilo, R. Rattazzi +1
We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared fini…
Spherically Symmetric Solutions in Ghost-Free Massive Gravity
D. Comelli, M. Crisostomi, F. Nesti +1
Recently, a class of theories of massive gravity has been shown to be ghost-free. We study the spherically symmetric solutions in the bigravity formulation of such theories. In gen…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
Three-manifold invariants and their relation with the fundamental group
E. Guadagnini, L. Pilo
We consider the 3-manifold invariant I(M) which is defined by means of the Chern-Simons quantum field theory and which coincides with the Reshetikhin-Turaev invariant. We present s…
Exact Spherically Symmetric Solutions in Massive Gravity
Z. Berezhiani, D. Comelli, F. Nesti +1
A phase of massive gravity free from pathologies can be obtained by coupling the metric to an additional spin-two field. We study the gravitational field produced by a static spher…
Old Inflation in String Theory
L. Pilo, A. Riotto, A. Zaffaroni
We propose a stringy version of the old inflation scenario which does not require any slow-roll inflaton potential and is based on a specific example of string compatification with…
Disformal invariance of continuous media with linear equation of state
M. Celoria, S. Matarrese, L. Pilo
We show that the effective theory describing single component continuous media with a linear and constant equation of state of the form is invariant under a 1-parameter fam…
Euclid. I. Overview of the Euclid mission
Euclid Collaboration, Y. Mellier, Abdurro'uf +1134
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Eucl…
FRW Cosmology in Ghost Free Massive Gravity
D. Comelli, M. Crisostomi, F. Nesti +1
We study FRW homogeneous cosmological solutions in the recently found ghost free massive gravity. In previous works it was shown that when the additional extra metric, needed to ge…
Massive Gravity on a Brane
Z. Chacko, M. Graesser, C. Grojean +1
At present no theory of a massive graviton is known that is consistent with experiments at both long and short distances. The problem is that consistency with long distance experim…
Gauge Theories on an Interval: Unitarity without a Higgs
C. Csaki, C. Grojean, H. Murayama +2
We consider extra dimensional gauge theories on an interval. We first review the derivation of the consistent boundary conditions (BC's) from the action principle. These BC's inclu…
Effective Lagrangian for Quantum Black Holes
A. Buonanno, M. Gattobigio, M. Maggiore +2
We discuss the most general effective Lagrangian obtained from the assumption that the degrees of freedom to be quantized, in a black hole, are on the horizon. The effective Lagran…
Lorentz Breaking Massive Gravity in Curved Space
D. Blas, D. Comelli, F. Nesti +1
A systematic study of the different phases of Lorentz-breaking massive gravity in a curved background is performed. For tensor and vector modes, the analysis is very close to that…
Spontaneous Lorentz Breaking and Massive Gravity
Z. Berezhiani, D. Comelli, F. Nesti +1
We study a theory where the presence of an extra spin-two field coupled to gravity gives rise to a phase with spontaneously broken Lorentz symmetry. In this phase gravity is massiv…