Speaker
Giovanni Amelino-Camelia
Description
I observe tha the physical content of all so-called 'space-
time measurements' only requires timed particle
detections. And I point out the aspects of our current
theories that render the abstraction of a spacetime
extremely covenient. Among these particularly significant
is the role of the assumed triviality of the geometry of
momentum space, which makes room for an observer-
independent notion of locality. Starting from some recent
studies of the quantum-gravity problem, which stumbled
upon hints of a nontrivial geometry of momentum space,
we might be led to renouncing to absolute locality,
thereby loosing a good part of the convenience of
abstracting a spacetime.
