Symmetry in Electromagnetism

• Other Authors: Ferrando, Albert (Editor), García-March, Miguel Ángel (Editor)
• Format: Electronic Book Chapter
• Language: English
• Published: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2020
• Subjects: History of engineering & technology; electromagnetic knots; helicity; spin-orbital momentum; magnetocardiography; quadratic penalty; variational mode decomposition; correlation coefficient; interval thresholding method; periodic structures; dispersion diagram; high-order coupling; glide symmetry; smart building; harmonics; geometric algebra; Poynting Multivector; electric-magnetic duality symmetry; quantum anomalies; optical helicity; electromagnetic polarization; particle creation; Maxwell theory; constraint equations; evolutionary equations; Barium hexaferrite; titanium; hysteresis; X-ray diffraction; permanent magnet applications; n/a; hopfion; Bateman construction; null fields; magnetic levitation; electrodynamic structure; ground high speed system; finite element analysis; non-local action; electrodynamics; electromagnetic duality symmetry; Aharonov-Bohm effect; Harvesting; low-power applications; vibration; micro-generator; optimal solution; magnetic circuit; periodical structure; effective power density; symmetry
• Online Access: DOAB: download the publication; DOAB: description of the publication

Electromagnetism plays a crucial role in basic and applied physics research. The discovery of electromagnetism as the unifying theory for electricity and magnetism represents a cornerstone in modern physics. Symmetry was crucial to the concept of unification: electromagnetism was soon formulated as a gauge theory in which local phase symmetry explained its mathematical formulation. This early connection between symmetry and electromagnetism shows that a symmetry-based approach to many electromagnetic phenomena is recurrent, even today. Moreover, many recent technological advances are based on the control of electromagnetic radiation in nearly all its spectra and scales, the manipulation of matter-radiation interactions with unprecedented levels of sophistication, or new generations of electromagnetic materials. This is a fertile field for applications and for basic understanding in which symmetry, as in the past, bridges apparently unrelated phenomena-from condensed matter to high-energy physics. In this book, we present modern contributions in which symmetry proves its value as a key tool. From dual-symmetry electrodynamics to applications to sustainable smart buildings, or magnetocardiography, we can find a plentiful crop, full of exciting examples of modern approaches to electromagnetism. In all cases, symmetry sheds light on the theoretical and applied works presented in this book.