Quantum dualism

Robert B. Jones

Jeffrey Alan Barrett

Sougato Bose, Dipankar Home

We show a hitherto unexplored consequence of the property of identicity in quantum mechanics. If two identical objects, distinguished by a dynamical variable A, are in certain entangled states of another dynamical variable B, then, for such states, they are also entangled in variable A when distinguished from each other by variable B. This dualism is independent of quantum statistics. Departures from identicity of the objects due to arbitrarily small differences in their innate attributes destroy this dualism. A system independent scheme to test the dualism is formulated which is readily realizable with photons. This scheme can be performed without requiring the entangled objects to be brought together. Thus whether two macro-systems behave as quantum identical objects can be probed without the complications of scattering. Such a study would complement the program of testing the validity of quantum superposition principle in the macro-domain which has stimulated considerable experimentation.

A. Helemskii

Abdul Halim, T. Subahan, Lilia Halim

Abstract: This research aims to investigate the level of students’ understanding of the concept of particle-wave dualism, and the relationship between concept understanding of classical physics and particle-wave dualism. 31 students of Physics Department of FMIPA Unsyiah who attended Quantum Physics were selected as the sample of the study. The data were collected through 20 items of diag-nostic UDFK multiple choice test. Each item contains 5 options, consisting of 1 correct answer, 1 misconception, and 3 distracters. The students were also given classical physics test using FCI test. The results of analysis using CRI showed that 13.8% students did not understand, 21.5% students less understand, 28.8% students understand, and 35.8% students misunderstand the concept of particle-wave dualism. Data analysis using correlation showed that the students’ understanding of particle-wave dualism was influenced by their understanding of classical physics (r = .17)

C. H. Woo

Through a series of short steps we try to make clear why the classical–quantal dualism is still indispensable, despite the advances in our understanding of quantum physics.