Quantum mechanics. Putting a spin on the Aharonov-Bohm oscillations.
نویسنده
چکیده
Of the many fascinating consequences of quantum mechanics, among the more mysterious ones is the Aharonov-Bohm effect. According to classical physics, a charged particle would be influenced by a magnetic field only if the particle goes through a region in which the magnetic field strength is nonzero. But according to quantum mechanics, if the quantum wave representing the state of a charged particle, such as an electron, is split into two waves that go around a solenoid and interfere, the resulting interference pattern is influenced by the magnetic flux enclosed by the waves, even though the particle is nowhere in the region of non vanishing field strength. This was predicted by Aharonov and Bohm in one of the most influential papers of physics in the latter part of the twentieth century [1]. In addition to its charge, the electron has a magnetic moment proportional to its spin. So, if the magnetic field strength is non vanishing along the electron wave, then in addition to the above flux dependent
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عنوان ژورنال:
- Science
دوره 297 5587 شماره
صفحات -
تاریخ انتشار 2002