262 citations · 1.4k across the 28 of their papers we have counts for
4 papers · 1 filter
Asymptotics of coherent invariant tensors
Pietro Dona, Marco Fanizza, Pierre Martin-Dussaud +1
We study the semiclassical limit of a class of invariant tensors for infinite-dimensional unitary representations of of the principal series, correspond…
The arrow of time in operational formulations of quantum theory
Andrea Di Biagio, Pietro Donà, Carlo Rovelli
The operational formulations of quantum theory are drastically time oriented. However, to the best of our knowledge, microscopic physics is time-symmetric. We address this tension…
Asymptotics of lowest unitary SL(2,C) invariants on graphs
Pietro Dona, Simone Speziale
We describe a technique to study the asymptotics of SL(2,C) invariant tensors associated to graphs, with unitary irreps and lowest SU(2) spins, and apply it to the Lorentzian EPRL-…
Numerical analysis of spin foam dynamics and the flatness problem
Pietro Dona, Francesco Gozzini, Giorgio Sarno
In this paper, we apply a recently proposed numerical algorithm for finding stationary phase points in spin foam amplitudes. We study a spin foam amplitude with three vertices and…