1.4k citations · 2k across the 22 of their papers we have counts for
22 papers
Quantum Spacetime and the Universe at the Big Bang, vanishing interactions and fading degrees of freedom
Sergio Doplicher, Gerardo Morsella, Nicola Pinamonti
As discussed in arXiv:1501.03298, Physics suggests that, close to cosmological singularities, the effective Planck length diverges, hence a "quantum point" becomes infinitely exten…
Perturbative Algebraic Quantum Field Theory on Quantum Spacetime: Adiabatic and Ultraviolet Convergence
Sergio Doplicher, Gerardo Morsella, Nicola Pinamonti
The quantum structure of Spacetime at the Planck scale suggests the use, in defining interactions between fields, of the Quantum Wick product. The resulting theory is ultraviolet f…
Pale Glares of Dark Matter in Quantum Spacetime
Sergio Doplicher, Klaus Fredenhagen, Gerardo Morsella +1
A U(1) gauge theory turns, on physically motivated models of Quantum Spacetime, into a U() gauge theory, hence free classical electrodynamics is no longer free and neutral…
Quantum Spacetime and Algebraic Quantum Field Theory
Dorothea Bahns, Sergio Doplicher, Gerardo Morsella +1
We review the investigations on the quantum structure of spactime, to be found at the Planck scale if one takes into account the operational limitations to localization of events w…
Comment on "Can we measure structures to a precision better than the Planck length?"[arXiv:1205.3636], by Sabine Hossenfelder
Sergio Doplicher, Gherardo Piacitelli, Luca Tomassini +1
First principles do imply a non-zero minimal distance between events in spacetime, but no positive lower bound to the precision of the measurement of a single coordinate.
On Quantum Spacetime and the horizon problem
Sergio Doplicher, Gerardo Morsella, Nicola Pinamonti
In the special case of a spherically symmetric solution of Einstein equations coupled to a scalar massless field, we examine the consequences on the exact solution imposed by a sem…