The Aharonov-Bohm effect, controversial features of a long-standing debate
El efecto Aharonov-Bohm, aspectos controversiales en un debate de larga duración
DOI:
https://doi.org/10.15446/rev.fac.cienc.v7n1.68727Keywords:
Aharonov-Bohm effect, electron interference, quantum phase difference, spatial lag shift (en)Efecto Aharonov-Bohm, interferencia de electrones, diferencia de fase cuántica, desplazamiento por retardo espacial (es)
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In the so-called magnetic Aharonov-Bohm effect, a quantum interference pattern shift is produced when electrons move in a magnetic field-free region, thus in absence of forces. Analogous fringe shifts are observed in interference experiments even when electrons travel through a magnetic field and are thus affected by magnetic forces. Because of the vast dedicated literature covering this subject it could require a non trivial effort to attain a comprehensive overview. Therefore, attention has been addressed: i) to recall the theory, ii) to describe the basic aspects of the main experiments realized up today and, iii) to review the long-standing debate regarding the interpretation of the Aharonov-Bohm phase shift as a new quantum topological effect with no analogue in classical theory, or as an energy-related lag effect based on classical forces.
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