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On gravitational interaction of fermions

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arxiv gr-qc/0112080 v1 pith:Q6RAD6YV submitted 2001-12-31 gr-qc

On gravitational interaction of fermions

classification gr-qc
keywords theorytransformationdiscussexactfoldy-wouthuysengravitationalinteractionlimit
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss some aspects of the gravitational interaction of the relativistic quantum particles with spin 1/2. The exact Foldy-Wouthuysen transformation is constructed for the Dirac particle coupled to the static spacetime metric. The quasi-relativistic limit of the theory is then analyzed. Using the analogous method, we obtain the exact Cini-Touschek transformation and discuss the ultra-relativistic limit of the fermion theory. We show that the Foldy-Wouthuysen transformation is not uniquely defined, and the corresponding ambiguity is deeply rooted in the relativistic quantum theory.

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Cited by 1 Pith paper

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  1. Foldy--Wouthuysen Transformation of the Generalized Dirac Equation in Symmetric Teleparallel Gravity

    gr-qc 2026-07 conditional novelty 6.0

    A Foldy-Wouthuysen reduction of the generalized Dirac equation in symmetric teleparallel gravity produces new spin-gravity, spin-momentum-gravity, and tidal couplings controlled by unknown parameters.