Fisher information and the weak equivalence principle of a quantum particle in a gravitational wave

We show that the weak equivalence principle (WEP) is violated for a quantum particle in a gravitational wave (GW) background, in the sense that extra mass information can be extracted in the presence of the GW. We quantify the degree of violation with the Fisher information of mass. This provides a...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2020-10, Vol.80 (10), p.1-5, Article 987
Main Author: Quach, James Q.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Elementary Particles
Equivalence principle
Fisher information
Gravitation
Gravitational waves
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
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Summary:We show that the weak equivalence principle (WEP) is violated for a quantum particle in a gravitational wave (GW) background, in the sense that extra mass information can be extracted in the presence of the GW. We quantify the degree of violation with the Fisher information of mass. This provides a precise characterisation of WEP violation by quantum systems in a GW, that should be useful in formalising other works that have argued for such violations heuristically.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-020-08530-6