The problem of objectivity, ie how to explain on quantum grounds the objective character of
the macroscopic world, is one of the aspects of the celebrated quantum-to-classical …

We have previously shown that three approaches to relational quantum dynamics—
relational Dirac observables, the Page-Wootters formalism and quantum deparametrizations …

In a quantum world, reference frames are ultimately quantum systems too–but what does it
mean to" jump into the perspective of a quantum particle"? In this work, we show that …

It was recently noted that different internal quantum reference frames (QRFs) partition a
system in different ways into subsystems, much like different inertial observers in special …

We study the non-perfect propagation of information for evolving a low-dimensional
environment that includes self-evolution as well as noisy initial states and analyse the …

The emergence of an objective classical picture is the core question of quantum Darwinism.
How does this reconstructed classical picture depends on the resources available to …

In 1962, Eugene P. Wigner [in Philosophical Reflections and Syntheses (Springer, Berlin,
1995), p. 247] introduced a thought experiment that highlighted the incompatibility in …

One of the key features of quantum mechanics is that any superposition of quantum states is
in itself a legitimate quantum state. This has far reaching consequences, and is behind the …