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Particle-dependent deformations of Lorentz symmetry
Giovanni Amelino-Camelia
I here investigate what is arguably the most significant residual challenge for the proposal of phenomenologically viable "DSR deformations" of relativistic kinematics, which conce…
Weakness of accelerator bounds on electron superluminality without a preferred frame
Giovanni Amelino-Camelia, Giulia Gubitosi, Niccoló Loret +2
The reference laboratory bounds on superluminality of the electron are obtained from the absence of in-vacuo Cherenkov processes and the determinations of synchrotron radiated powe…
On the fate of Lorentz symmetry in relative-locality momentum spaces
Giovanni Amelino-Camelia
The most studied doubly-special-relativity scenarios, theories with both the speed-of-light scale and a length/inverse-momentum scale as non-trivial relativistic invariants, have c…
OPERA neutrinos and relativity
Giovanni Amelino-Camelia, Laurent Freidel, Jerzy Kowalski-Glikman +1
In a recent study, Cohen and Glashow argue that superluminal neutrinos of the type recently reported by OPERA should be affected by anomalous Cherenkov-like processes. This causes…
OPERA-reassessing data on the energy dependence of the speed of neutrinos
Giovanni Amelino-Camelia, Giulia Gubitosi, Niccoló Loret +3
We offer a preliminary exploration of the two sides of the challenge provided by the recent OPERA data on superluminal neutrinos. On one side we stress that some aspects of this re…
Modeling transverse relative locality
Giovanni Amelino-Camelia, Leonardo Barcaroli, Niccoló Loret
We investigate some aspects of relativistic classical theories with "relative locality", in which pairs of events established to be coincident by nearby observers may be described…
Relative-locality distant observers and the phenomenology of momentum-space geometry
Giovanni Amelino-Camelia, Michele Arzano, Jerzy Kowalski-Glikman +2
We study the translational invariance of the relative-locality framework proposed in arXiv:1101.0931, which had been previously established only for the case of a single interactio…
Using CMB data to constrain non-isotropic Planck-scale modifications to Electrodynamics
Giulia Gubitosi, Marina Migliaccio, Luca Pagano +4
We develop a method to constrain non-isotropic features of Cosmic Microwave Background (CMB) polarization, of a type expected to arise in some models describing quantum gravity eff…
Relative locality: A deepening of the relativity principle
Giovanni Amelino-Camelia, Laurent Freidel, Jerzy Kowalski-Glikman +1
We describe a recently introduced principle of relative locality which we propose governs a regime of quantum gravitational phenomena accessible to experimental investigation. This…
Relative locality and the soccer ball problem
Giovanni Amelino-Camelia, Laurent Freidel, Jerzy Kowalski-Glikman +1
We consider the behavior of macroscopic bodies within the framework of relative locality, which is a recent proposal for Planck scale modifications of the relativistic dynamics of…
Speed of particles and a relativity of locality in -Minkowski quantum spacetime
Giovanni Amelino-Camelia, Niccoló Loret, Giacomo Rosati
The last decade of research on -Minkowski noncommutative spacetime has been strongly characterized by a controversy concerning the speed of propagation of massless particles. Mo…
The principle of relative locality
Giovanni Amelino-Camelia, Laurent Freidel, Jerzy Kowalski-Glikman +1
We propose a deepening of the relativity principle according to which the invariant arena for non-quantum physics is a phase space rather than spacetime. Descriptions of particles…