Comparative analysis of direct and “step-by-step” Foldy-Wouthuysen transformation methods
نویسندگان
چکیده
منابع مشابه
Comparative analysis of direct and step-by-step FoldyWouthuysen transformation methods
Relativistic methods for the FoldyWouthuysen transformation of the step-by-step type already at the first step give an expression for the Hamilton operator not coinciding with the exact result determined by the Eriksen method. The methods agree for the zeroth and first orders in the Planck constant terms but do not agree for the second and higher-order terms. We analyze the benefits and drawbac...
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The Foldy–Wouthuysen transformation of the Dirac Hamiltonian is generally taught as simply a mathematical trick that allows one to obtain a two-component theory in the low-energy limit. It is not often emphasized that the transformed representation is the only one in which one can take a meaningful classical limit , in terms of particles and antiparticles. We briefly review the history and phys...
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ژورنال
عنوان ژورنال: Theoretical and Mathematical Physics
سال: 2013
ISSN: 0040-5779,1573-9333
DOI: 10.1007/s11232-013-0086-1