Measuring global gravity-inertial effects with ring laser interferometers

V.N. Rudenko^†^a, b, S.I. Oreshkin^a, K.V. Rudenko^b
^aLomonosov Moscow State University, Shternberg State Astronomical Institute, Universitetskii prosp. 13, Moscow, 119889, Russian Federation
^bLomonosov Moscow State University, Faculty of Physics, Vorobevy gory, Moscow, 119899, Russian Federation

We discuss advances achieved over the past 20'years in physical experiments on measuring the gravity-inertial background of Earth's surface associated with astrodynamical, geodynamical, and geophysical effects generated by Earth's internal gravity and thermodynamics and by its diurnal and orbital rotation. We discuss a unique instrument, a large-scale Sagnac ring laser interferometer, with a record high sensitivity to variations in the rotation rate and inclination of the laboratory reference frame, as well as to the rotational asymmetry of the optical refractive index of a medium, including a vacuum. These tools allow obtaining knowledge that is simultaneously valuable for elementary particle physics, quantum field theory, laser physics, astrometry, global geodynamics, and seismology. Applications may consist in an early forecast of global cataclysms such as earthquakes and progress in the metrology of angular measurements.

Keywords: inertial sensors, Sagnac interferometer, measurements of Earth's rotation, toroidal modes, gravitational magnetism effect, dark matter particles, quantum measurements, matter wave interferometers, precision goniometers
PACS: 03.30.+p, 04.20.−q, 06.20.−f, 91.30.−f, 03.75.−b (all)
DOI: 10.3367/UFNe.2021.12.039128
URL: https://ufn.ru/en/articles/2022/9/b/
Web of Science

001099189500002
Scopus

2-s2.0-85182888337
ADS NASA

2022PhyU...65..920R
Citation: Rudenko V N, Oreshkin S I, Rudenko K V "Measuring global gravity-inertial effects with ring laser interferometers" Phys. Usp. 65 920–951 (2022)

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Received: 26th, May 2021, revised: 24th, November 2021, accepted: 13th, December 2021

Оригинал: Руденко В Н, Орешкин С И, Руденко К В «Измерение глобальных гравиинерциальных эффектов кольцевыми лазерными интерферометрами» УФН 192 984–1018 (2022); DOI: 10.3367/UFNr.2021.12.039128

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