Kramers degeneracy theorem in nonrelativistic QED
Michael Loss, Tadahiro Miyao, Herbert Spohn
TL;DR
This paper proves Kramers degeneracy for the eigenvalues of the Pauli-Fierz Hamiltonian with spin 1/2 in nonrelativistic QED, including analysis at fixed total momentum.
Contribution
It establishes the Kramers degeneracy theorem for the Pauli-Fierz Hamiltonian, extending understanding of eigenvalue degeneracies in nonrelativistic QED.
Findings
Eigenvalues of the Pauli-Fierz Hamiltonian are degenerate due to Kramers theorem.
Degeneracy persists at fixed total momentum.
The proof applies to systems with spin 1/2 in nonrelativistic quantum electrodynamics.
Abstract
Degeneracy of the eigenvalues of the Pauli-Fierz Hamiltonian with spin 1/2 is proven by the Kramers degeneracy theorem. The Pauli-Fierz Hamiltonian at fixed total momentum is also investigated.
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