Condition for macroscopic realism beyond the Leggett-Garg inequalities
Condition for macroscopic realism beyond the Leggett-Garg inequalities
In 1985, Leggett and Garg put forward the concept of macroscopic realism (macrorealism) and, in analogy to Bell's theorem, derived a necessary condition in terms of inequalities, which are now known as the Leggett-Garg inequalities. In this paper, we discuss another necessary condition called no-signaling in time. It solely bases …