Undergrad The Dirac equation as a linear tensor equation for one component

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The Dirac equation is a fundamental spinor equation in modern physics, with previous tensor equivalents being nonlinear or multi-component. The author demonstrates that the Dirac equation in an electromagnetic field can be represented as a fourth-order equation for a single component of the Dirac spinor. This work presents a linear tensor equivalent of the Dirac equation focused on just one component. The findings have potential applications in general relativity and lattice approximations of the Dirac field. This new perspective enhances the understanding of the Dirac equation's implications.
akhmeteli
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The Dirac equation is a spinor equation. Tensor equivalents of the equation proposed previously were nonlinear or involved several components of the Dirac field. I derived a linear tensor equivalent of the Dirac equation for just one component.
The abstract of my new article (Eur. Phys. J. C 84, 488 (2024)):

The Dirac equation is one of the most fundamental equations of modern physics. It is a spinor equation, but some tensor equivalents of the equation were proposed previously. Those equivalents were either nonlinear or involved several components of the Dirac field. On the other hand, the author showed previously that the Dirac equation in electromagnetic field is equivalent to a fourth-order equation for one component of the Dirac spinor. The equivalency is used in this work to derive a linear tensor equivalent of the Dirac equation for just one component. This surprising result can be used in applications of the Dirac equation, for example, in general relativity or for lattice approximation of the Dirac field, and can improve our understanding of the Dirac equation.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA

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