# The Thomas precession factor in spin–orbit interaction

@article{Kroemer2004TheTP, title={The Thomas precession factor in spin–orbit interaction}, author={Herbert Kroemer}, journal={American Journal of Physics}, year={2004}, volume={72}, pages={51-52} }

The origin of the Thomas factor 1/2 in the spin–orbit Hamiltonian can be understood by considering the case of a classical electron moving in crossed electric and magnetic fields chosen such that the electric Coulomb force is balanced by the magnetic Lorentz force.

## 17 Citations

An exact derivation of the Thomas precession rate using the Lorentz transformation

- PhysicsNanoScience + Engineering
- 2020

Using the standard formalism of Lorentz transformation of the special theory of relativity, we derive the exact expression of the Thomas precession rate for an electron in a classical circular orbit…

The classical dynamics of Rydberg Stark atoms in momentum space

- Physics
- 2008

The classical dynamics of a bound electron in a static electric field is discussed. The well-known Hamiltonian–Jacobi equations are examined and reexpressed in momentum coordinates, the preferred…

Origin of the Spin-Orbit Interaction

- Physics
- 2015

We consider a semi-classical model to describe the origin of the spin-orbit interaction in a simple system such as the hydrogen atom. The interaction energy U is calculated in the rest-frame of the…

Role of the electromagnetic momentum in the spin-orbit
interaction

- Physics
- 2016

Abstract
The role played by the linear and angular momentum of the electromagnetic fields in the
understanding of several aspects of quantum mechanics is discussed. A non-relativistic
semi-classical…

The relativistic mechanism of the Thomas–Wigner rotation and Thomas precession

- Physics
- 2020

We consider the Thomas-Wigner rotation of coordinate systems under successive Lorentz transformations of inertial reference frames and disclose its physical mechanism on the basis of relativistic…

Relativistic velocity space, Wigner rotation, and Thomas precession

- PhysicsAmerican Journal of Physics
- 2004

We develop a relativistic velocity space called rapidity space from the single assumption of Lorentz invariance, and use it to visualize and calculate effects resulting from the successive…

Electrodynamics in Accelerated Frames

- Physics
- 2017

In the current paper we present a generalization of the transforms of the electromagnetic field from the frame co-moving with an accelerated particle into an inertial frame of reference. The solution…

Polarization Precession

- Physics
- 2008

Deduce an expression for the rate of precession of the spin polarization unit vector P̂ of a relativistic charged particle in laboratory electric and magnetic fields E and B. The polarization vector…

Generalization of the Thomas-Wigner Rotation to Uniformly Accelerating Boosts

- Physics, Engineering
- 2021

In the current paper we present a generalization of the transforms from the frame co-moving with an accelerated particle for uniformly accelerated motion into an inertial frame of reference. The…

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