Can I read Newtonian gravitational constant measurement. All atomic variables become extreme when using a source mass consisting of 3 or more parts on EtoBox?

Newtonian gravitational constant measurement. All atomic variables become extreme when using a source mass consisting of 3 or more parts by Dubetsky, B. is a scholarly article available to read on EtoBox.

What is Newtonian gravitational constant measurement. All atomic variables become extreme when using a source mass consisting of 3 or more parts about?

Atomic interferometry methods used to measure the Newtonian gravitational constant. To improve the accuracy, one should measure the phase of an atomic interferometer at extreme values of atomic vertical velocities and coordinates. Owing to symmetry, the horizontal components of atomic velocities and coordinates are also extreme. We propose using a source mass consisting of 3 or more parts, since only in this case one can find such an arrangement of parts that all atomic variables become extreme. Nonlinear dependences of the phase on the uncertainties of atomic positions and velocities near those extreme values required us to modify the expression for the phase relative standard deviation (RSD). Moreover, taking into account nonlinear terms in the phase dependence on the atomic coordinates and velocities leads to a phase shift. In the last experiment to measure the Newtonian gravitational constant by atomic interferometry, this shift was not included. We took the shift into account, got a value of 199ppm for it, and this leads to a decrease in the value of the Newton constant by 0.02%. In addition, we showed that at equal sizes of the atomic cloud in the vertical and horizontal dire

Author

Dubetsky, B.

Published

2020

Language

EN