Proposal for an experiment to verify Wigner's rotation at non-relativistic speeds with massive spin-1/2 particles

authored by
Veiko Palge, Jacob Dunningham, Yuji Hasegawa, Christian Pfeifer
Abstract

The Wigner rotation of quantum particles with spin is one of the fascinating consequences of interplay between special relativity and quantum mechanics. In this paper we show that a direct experimental verification of Wigner's rotation is in principle accessible in the regime of non-relativistic velocities at ∼103 ms−1 for massive spin-1/2 particles. We discuss how the experiment could be carried out in a laboratory using cold neutrons. The measurement at non-relativistic velocities becomes possible through letting neutrons propagate for a sufficiently long time because Wigner rotation is a cumulative effect.

External Organisation(s)
University of Tartu
University of Sussex
TU Wien (TUW)
Center of Applied Space Technology and Microgravity (ZARM)
Type
Article
Journal
Physics Letters, Section A: General, Atomic and Solid State Physics
Volume
544
ISSN
0375-9601
Publication date
28.03.2025
Publication status
E-pub ahead of print
Peer reviewed
Yes
ASJC Scopus subject areas
General Physics and Astronomy
Electronic version(s)
https://doi.org/10.1016/j.physleta.2025.130490 (Access: Unknown)