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Measurement of the space-time interval between two events using the retarded and advanced times of each event with respect to a time-like world-line
Giovanni Amelino-Camelia, John Stachel
Several recent studies have been devoted to investigating the limitations that ordinary quantum mechanics and/or quantum gravity might impose on the measurability of space-time obs…
First results of the Noether theorem for Hopf-algebra spacetime symmetries
Giovanni Amelino-Camelia, Giulia Gubitosi, Antonino Marciano +4
We summarize here the first results obtained using a technique we recently developed for the Noether analysis of Hopf-algebra spacetime symmetries, including the derivation of cons…
Twisted Hopf symmetries of canonical noncommutative spacetimes and the no-pure-boost principle
Giovanni Amelino-Camelia, Fabio Briscese, Giulia Gubitosi +3
We study the twisted-Hopf-algebra symmetries of observer-independent canonical spacetime noncommutativity, for which the commutators of the spacetime coordinates take the form [x^{…
On the 5D differential calculus and translation transformations in 4D kappa-Minkowski noncommutative spacetime
Giovanni Amelino-Camelia, Antonino Marciano, Daniele Pranzetti
We perform a Noether analysis for a description of translation transformations in 4D -Minkowski noncommutative spacetime which is based on the structure of a 5D differential cal…
A no-pure-boost uncertainty principle from spacetime noncommutativity
Giovanni Amelino-Camelia, Giulia Gubitosi, Antonino Marcianó +2
We study boost and space-rotation transformations in kappa-Minkowski noncommutative spacetime, using the techniques that some of us had previously developed (hep-th/0607221) for a…