Berlin 2014 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 2: Main talk: Experimental Gravitation

GR 2.1: Hauptvortrag

Montag, 17. März 2014, 11:25–12:10, SPA Kapelle

Modern tests of Special Relativity using cryogenic electromagnetic resonators — •Achim Peters — Humboldt Universität zu Berlin, Institut für Physik, AG Optische Metrologie, Newtonstr. 15, 12489 Berlin, Germany

Ultra-stable electromagnetic resonators are an exquisite tool for performing precision tests of Lorentz invariance and Special Relativity.

In this talk I will first present results from a recently concluded Michelson-Morley type experiment using two orthogonally aligned cryogenic sapphire microwave oscillators (CSOs) actively rotated on a high-precision air-bearing turntable. After more than one year of almost continuous operation, the sensitivity of this setup to Lorentz invariance violations has now reached the 10−18 to 10−19 regime.

In the next version of this experiment these microwave oscillators will be combined with a new generation of ultra-stable cryogenic optical resonators (COREs). I will present first results from measurements utilizing these COREs and then discuss the prospects for using the new setup to investigate simultaneously a multitude of possible Lorentz invariance violations in the 10−20 to 10−21 regime.

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