Time-Symmetrized Quantum Theory, Counterfactuals, and `Advanced Action'
Abstract
Description
Recent authors have raised objections to the counterfactual interpretation of the Aharonov-Bergmann-Lebowitz (ABL) rule of time symmetrized quantum theory (TSQT). I distinguish between two different readings of the ABL rule, counterfactual and non-counterfactual, and confirm that TSQT advocate L. Vaidman is employing the counterfactual reading to which these authors object. Vaidman has responded to the objections by proposing a new kind of time-symmetrized counterfactual, which he has defined in two different ways. It is argued that neither definition succeeds in overcoming the objections, except in a special case previously noted by Cohen and Hiley. In addition, a connection is made between TSQT and Price's concept of `advanced action', which further supports the special case discussed.
Minor editorial changes and correction to figure 4. To appear in "Studies in History and Philosophy of Modern Physics"
Minor editorial changes and correction to figure 4. To appear in "Studies in History and Philosophy of Modern Physics"