Some measurements in quantum mechanics disturb each other. This has puzzled physicists
since the formulation of the theory, but only in recent decades has the incompatibility of …

Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

Recent advances in cooling, control, and measurement of mechanical systems in the
quantum regime have opened the possibility of the first direct observation of quantum …

The notion of macrorealism was introduced by Leggett and Garg in an attempt to capture our
intuitive conception of the macroscopic world, which seems difficult to reconcile with our …

In this study, we determine a violation of the Leggett-Garg inequalities due to gravitational
interaction in a hybrid system consisting of a harmonic oscillator and a spatially localized …

Leggett and Garg formulated macrorealist models encoding our intuition on classical
systems, ie, physical quantities have a definite value that can be measured with minimal …

The search for empirical schemes to evidence the nonclassicality of large masses is a
central quest of current research. However, practical schemes to witness the irreducible …

The Leggett-Garg inequality holds for any macrorealistic system that is being measured
noninvasively. A violation of the inequality can signal that a system does not conform to our …

Abstract The Leggett–Garg inequality attempts to classify experimental outcomes as arising
from one of two possible classes of physical theories: those described by macrorealism …

The law of entropy increase postulates the existence of irreversible processes in physics: the
total entropy of an isolated system can increase, but cannot decrease. The annihilation of an …