On the status of quantum tunnelling time

Abstract How long does a quantum particle take to traverse classically forbidden energy barrier? In other words, what is the correct expression for tunnelling time? This seemingly simple question has inspired widespread debate in physics literature. I argue that we should not expect orthodox interpretation of mechanics provide unique time, because do so it would have answer whose assumptions are tension with its core interpretational commitments. explain how this conclusion connects time’s special status mechanics, meaningfulness concepts different interpretations prospect constructing experimental tests distinguish between interpretations, and weak measurement resolving questions about histories subensembles.