Perspectives in Quantum Physics: Epistemological, Ontological and Pedagogical. An investigation into student and expert perspectives on the physical interpretation of quantum mechanics, with implications for modern physics instruction

Details Perspectives in Quantum Physics: Epistemological, Ontological and Pedagogical. An investigation into student and expert perspectives on the physical interpretation of quantum mechanics, with implications for modern physics instruction Perspectives in Quantum Physics: Epistemological, Ontological and Pedagogical. An investigation into student and expert perspectives on the physical interpretation of quantum mechanics, with implications for modern physics instruction

2011-09-06

arxiv.org/abs/1109.1295v1

Physics

Physics Education

PhD dissertation, 6 Chapters (173 pages), 6 Appendices, 89 References. Supporting course materials available at: http://tiny

Scientific paper

A common learning goal for modern physics instructors is for students to recognize a difference between the experimental uncertainty of classical physics and the fundamental uncertainty of quantum mechanics. Our studies suggest this notoriously difficult task may be frustrated by the intuitively realist perspectives of introductory students, and a lack of ontological flexibility in their conceptions of light and matter. We have developed a framework for understanding and characterizing student perspectives on the physical interpretation of quantum mechanics, and demonstrate the differential impact on student thinking of the myriad ways instructors approach interpretive themes in their introductory courses. Like expert physicists, students interpret quantum phenomena differently, and these interpretations are significantly influenced by their overall stances on questions central to the so-called measurement problem: Is the wave function physically real, or simply a mathematical tool? Is the collapse of the wave function an ad hoc rule, or a physical transition not described by any equation? Does an electron, being a form of matter, exist as a localized particle at all times? These questions, which are of personal and academic interest to our students, are largely only superficially addressed in our introductory courses, often for fear of opening a Pandora's Box of student questions, none of which have easy answers. We show how a transformed modern physics curriculum (recently implemented at the University of Colorado) may positively impact student perspectives on indeterminacy and wave-particle duality, by making questions of classical and quantum reality a central theme of our course, but also by making the beliefs of our students, and not just those of scientists, an explicit topic of discussion.

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