Constructing Berry-Maxwell equations with Lorentz invariance and Gauss' law of Weyl monopoles in 4D energy-momentum space

• URL: http://arxiv.org/abs/2308.00612v1
• Date: Sun, 30 Jul 2023 05:37:50 GMT
• Title: Constructing Berry-Maxwell equations with Lorentz invariance and Gauss' law of Weyl monopoles in 4D energy-momentum space
• Authors: Yiming Pan, Ruoyu Yin
• Abstract summary: We present the construction of a reciprocal electromagnetic field by extending the Berry curvatures from momentum space into 4D energy-momentum space. We propose the reciprocal electromagnetic field as a physical reality rooted in the fundamental principles of special relativity and Gauss's law of Weyl monopoles.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present the construction of a reciprocal electromagnetic field by extending the Berry curvatures from momentum space into four-dimensional (4D) energy-momentum space. The resulting governing equations, termed Berry-Maxwell equations, are derived, by incorporating Lorentz invariance to constrain the parameter space of energy-momentum. Notably, these Berry-Maxwell equations exhibit dual and self-dual structures compared to the Maxwell equations governing conventional electromagnetic fields. Furthermore, we demonstrate that the very existence of Berry-Maxwell equations is independent of the geometrical phase of matter waves, implying that they cannot be directly derived from the Schrodinger equation. Consequently, we propose the reciprocal electromagnetic field as a physical reality, rooted in the fundamental principles of special relativity and Gauss's law of Weyl monopoles. To validate our theory experimentally, we outline three potential effects for verification: (i) Lorentz boost of a Weyl monopole, (ii) reciprocal Thouless pumping, and (iii) plane-wave solutions of Berry-Maxwell equations.

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