328 citations · 1.7k across the 41 of their papers we have counts for
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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…
Gauge Is More Than Mathematical Redundancy
Carlo Rovelli
Physical systems may couple to other systems through variables that are not gauge invariant. When we split a gauge system into two subsystems, the gauge-invariant variables of the…
Agency in Physics
Carlo Rovelli
I discuss three aspects of the notion of agency from the standpoint of physics: (i) what makes a physical system an agent; (ii) the reason for agency's time orientation; (iii) the…
Stable Facts, Relative Facts
Andrea Di Biagio, Carlo Rovelli
Facts happen at every interaction, but they are not absolute: they are relative to the systems involved in the interaction. Stable facts are those whose relativity can effectively…
Memory and entropy
Carlo Rovelli
I study the physical nature of traces (or memories). Surprisingly, (i) systems separation with (ii) temperature differences and (iii) long thermalization times, are sufficient cond…