The Stationary Dirac Equation as a Generalized Pauli Equation for Two Quasiparticles

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• 作者：Nikolay L. Chuprikov
• 关键词：Dirac equation ; Klein tunneling ; Dirac sea ; Potential step
• 刊名：Foundations of Physics
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：45
• 期：6
• 页码：644-656
• 全文大小：428 KB
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• 作者单位：Nikolay L. Chuprikov (1)
  
  1. Tomsk State Pedagogical University, 634041, Tomsk, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Quantum Physics
  Relativity and Cosmology
  Biophysics and Biomedical Physics
  Mechanics
  Condensed Matter
  
• 出版者：Springer Netherlands
• ISSN：1572-9516

文摘

By analyzing the Dirac equation with static electric and magnetic fields it is shown that Dirac’s theory is nothing but a generalized one-particle quantum theory compatible with the special theory of relativity. This equation describes a quantum dynamics of a single relativistic fermion, and its solution is reduced to solution of the generalized Pauli equation for two quasiparticles which move in the Euclidean space with their effective masses holding information about the Lorentzian symmetry of the four-dimensional space-time. We reveal the correspondence between the Dirac bispinor and Pauli spinor (two-component wave function), and show that all four components of the Dirac bispinor correspond to a fermion (or all of them correspond to its antiparticle). Mixing the particle and antiparticle states is prohibited. On this basis we discuss the paradoxical phenomena of Zitterbewegung and the Klein tunneling.