A new test of local Lorentz invariance using ${}^{21}$Ne-Rb-K comagnetometer

M. Smiciklas, J. M. Brown, L. W. Cheuk +1

We develop a new comagnetometer using ${}^{21}$Ne atoms with nuclear spin $I=3/2$ and Rb atoms polarized by spin-exchange with K atoms to search for tensor interactions that violate…