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10 papers · 2 filters
Time-Symmetrized Quantum Theory
Lev Vaidman
A brief review of the time-symmetrized quantum formalism originated by Aharonov, Bergmann and Lebowitz is presented. Symmetry of various measurements under the time reversal is ana…
Causality and Nonlocality as Axioms for Quantum Mechanics
Sandu Popescu, Daniel Rohrlich
Quantum mechanics permits nonlocality - both nonlocal correlations and nonlocal equations of motion - while respecting relativistic causality. Is quantum mechanics the unique theor…
Measurement of Time-of-Arrival in Quantum Mechanics
Y. Aharonov, J. Oppenheim, S. Popescu +2
It is argued that the time-of-arrival cannot be precisely defined and measured in quantum mechanics. By constructing explicit toy models of a measurement, we show that for a free p…
Feynman Integrals with Absorbing Boundaries
A. Marchewka, Z. Schuss
We propose a formulation of an absorbing boundary for a quantum particle. The formulation is based on a Feynman-type integral over trajectories that are confined to the non-absorbi…
Quantum Measurement Back-Reaction and Induced Toplogical Phases
Y. Aharonov, T. Kaufherr, S. Popescu +1
It is shown that a topological vector-potential (Berry phase) is induced by the act of measuring angular momentum in a direction defined by a reference particle. This vector potent…
Strict Bounds on Franson Inequality
Lev Vaidman, Ori Belkind
An inequality, recently proposed by Franson [Phys. Rev. A 54, 3808 (1996)] is analyzed and improved. The inequality connects the change of the expectation value of an observable wi…