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Rotation angles of a rotating disc as the holonomy of the Hopf fibration

arXiv
Authors: Takuya Matsumoto

Year

2025

Paper ID

16215

Status

Preprint

Abstract Read

~2 min

Abstract Words

121

Citations

N/A

Abstract

This article investigates a simple kinematical model of a disc (Disc B) rolling on the edge of a fixed disc (Disc A) to study the geometric nature of rotation. The total rotation angle Δ of Disc B after one cycle is decomposed into a dynamical phase Δd and a geometric phase Δg. The paper's main contribution is to demonstrate that this geometric phase can be essentially described as the U(1) holonomy of the Hopf fibration with the canonical connection. By using a Gauss map to represent the disc's motion as a curve on a two-sphere $S2$, the work connects the physical rotation to the underlying geometry of the Hopf fiber bundle S3 → S2 and clarifies the origin of the geometric phase.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • This article investigates a simple kinematical model of a disc (Disc B) rolling on the edge of a fixed disc (Disc A) to study the geometric nature of rotation.

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