کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1857499 1529901 2011 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kohn’s theorem, Larmor’s equivalence principle and the Newton–Hooke group
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Kohn’s theorem, Larmor’s equivalence principle and the Newton–Hooke group
چکیده انگلیسی

We consider non-relativistic electrons, each of the same charge to mass ratio, moving in an external magnetic field with an interaction potential depending only on the mutual separations, possibly confined by a harmonic trapping potential. We show that the system admits a “relativity group” which is a one-parameter family of deformations of the standard Galilei group to the Newton–Hooke group which is a Wigner–İnönü contraction of the de Sitter group. This allows a group-theoretic interpretation of Kohn’s theorem and related results. Larmor’s theorem is used to show that the one-parameter family of deformations are all isomorphic. We study the “Eisenhart” or “lightlike” lift of the system, exhibiting it as a pp-wave. In the planar case, the Eisenhart lift is the Brdička–Eardley–Nappi–Witten pp-wave solution of Einstein–Maxwell theory, which may also be regarded as a bi-invariant metric on the Cangemi–Jackiw group.


► We show that non-relativistic electrons moving in a magnetic field with trapping potential admits as relativity group the Newton–Hooke group.
► We use this fact to give a group theoretic interpretation of Kohn’s theorem and to obtain the spectrum.
► We obtain the lightlike lift of the system exhibiting showing it coincides with the Nappi–Witten spacetime.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 326, Issue 7, July 2011, Pages 1760–1774
نویسندگان
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