Bibliographic Details
| Title: |
On free fall of fermions and antifermions. |
| Authors: |
Emelyanov, Viacheslav A.1 (AUTHOR) viacheslav.emelyanov@partner.kit.edu |
| Superior Title: |
European Physical Journal C -- Particles & Fields. Jul2023, Vol. 83 Issue 7, p1-14. 14p. |
| Subject Terms: |
*QUANTUM field theory, *GRAVITATIONAL fields, *QUANTUM theory, *FERMIONS, *CURVED spacetime, *EQUIVALENCE principle (Physics) |
| People: |
EINSTEIN, Albert, 1879-1955 |
| Abstract: |
We propose a model describing spin-half quantum particles in curved spacetime in the framework of quantum field theory. Our model is based on embodying Einstein's equivalence principle and general covariance in the definition of quantum-particle states. With this model at hand, we compute several observables which characterise spin-half quantum particles in a gravitational field. In particular, we find that spin precesses in a normal Fermi frame, even in the absence of torsion. The effect appears to be complementary to free-fall non-universality we have recently reported about for spinless quantum particles. Furthermore, we find that quantum-particle gravitational-potential energy is insensitive to wave-packet spreading in the Earth's gravitational field, that is responsible for the non-universality of free fall in quantum theory. This theoretical result provides another channel for the experimental study of our quantum-particle model by using gravitational spectrometers. Finally, we also find that (elementary) fermions and antifermions are indistinguishable in gravity. [ABSTRACT FROM AUTHOR] |
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