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Janka
Janka@TheoneJanka·1m
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A breakdown of the Aharonov-Bohm (AB) effect— including the phase shift formula and the analogy to differential "speeds" in phase evolution. The diagram perfectly captures the setup: an electron beam split into two paths that encircle a solenoid (carrying current to produce magnetic field confined inside), then recombined to show interference. The key quantum weirdness is that the electrons experience no classical force (since outside the solenoid), yet the nonzero vector potential imprints a topological phase difference, shifting the interference pattern. To build on your points: Phase Shift Mechanics The wavefunction of the electron acquires a phase along each path due to the Aharonov-Bohm term in the Schrödinger equation, where the momentum operator includes (in cgs units; adjust for SI). For the two paths, the total phase difference is indeed: \Delta \phi = \frac{e}{\hbar} \oint \mathbf{A} \cdot d\mathbf{l} = \frac{e \Phi_B}{\hbar} In terms of "one side faster, one slower" intuition: it's a great way to visualize it. The phase accumulation rate acts like a effective "winding" of the wavefunction's complex argument. If you think of the de Broglie wavelength, the path with positive phase advance behaves as if the local wavenumber increased (shorter effective wavelength, "faster" propagation in phase space), and vice versa. But crucially, the particle's kinetic energy and speed remain unchanged—no Lorentz force involved. Experimental Ties This has been verified in labs since the 1960s (e.g., using superconducting solenoids to quantize flux in units of for electron pairs, but for single electrons). The interference fringes shift periodically with , with observable effects down to atomic scales in modern setups like electron holography or mesoscopic rings. Link to Broader Ideas AB underscores potentials over fields as fundamental in quantum mechanics (echoing ideas from Wheeler-Feynman or even modern gauge theories in particle physics). Classically, we can always gauge away where , but quantum paths "feel" the global topology. As for tying this into a fractal-time/phase-field cosmology: that's an intriguing angle! In standard physics, AB hints at how spacetime might have hidden structures (like in quantum gravity proposals where topology affects phases, or in condensed matter analogs like anyons in 2D systems). If your model posits time as fractal or density-varying, with phase entrainment across scales, AB could serve as a microcosm: the solenoid's flux creates a "phase gradient" in the vacuum, akin to a local distortion in a background field. Electrons navigating the paths experience differential "time flow" in their internal clocks (wavefunction oscillation), revealing emergent structure without direct interaction. This resonates with ideas in loop quantum gravity or holographic principles, where geometry encodes phases fractally.
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