Adding the octupole moment of galaxy cross-correlations to the dipole improves forecasted constraints on the local position invariance violation parameter alpha by about 11% at smin = 15 Mpc/h.
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Testing local position invariance with odd multipoles of galaxy clustering statistics
Adding the octupole moment of galaxy cross-correlations to the dipole improves forecasted constraints on the local position invariance violation parameter alpha by about 11% at smin = 15 Mpc/h.