Realism and the physical world

By A. Leggett. 2008

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Leggett–Garg inequalities (2013, methodology): “ing of the natural world. As this assumption reﬂects such basic notions about causality and the arrow of time, it has remained unchallenged in discussions of the source of LGI violation (but see Ref. [53] for a word of caution on this point). Concerning assumption (A1), Peres notes [9] that realism ”
Experimental violation of a Bell’s inequality in time with weak measurement (2010, background): “On the other hand, the only degree of freedom of this system is the phase difference between the superconducting order parameters on both sides of the Josephson junction forming the Cooper-pair box, conjugate to the number of Cooper pairs passed through the junction; this phase is a collective varia”
Do We Really Understand Quantum Mechanics? (2012, background): “Lively discussions to decide whether or not quantum mechanics in itself is inherently nonlocal have taken place and are still active [232–234]; see also [24], [123, 235], the general discussion of realism by Leggett [236], or a more recent contribution in [237].”