Planck’s Inconstant

2020, August 8
Fedele Lizzi, Gianpiero Mangano, Alberto Porzio
PoS CORFU2015 (2016) 108
Is it possible that the fundamental Planck constant has stochastic fluctuations? We entertain this possibility in this talk, motived by a possible quantum structure of spacetime. We describe in which sense Panck’s constant is inconstant (a nontrivial affair for fundamental dimensionful quantities. In our scheme h is time dependent, given by random fluctuations around zero, characterized by the correlation time scale τ. As examples we briefly discuss possible experimental signatures using coherent states and interferometers.