153 citations · 597 across the 12 of their papers we have counts for
12 papers
BOOST -- A Satellite Mission to Test Lorentz Invariance Using High-Performance Optical Frequency References
Norman Gürlebeck, Lisa Wörner, Thilo Schuldt +15
BOOST (BOOst Symmetry Test) is a proposed satellite mission to search for violations of Lorentz invariance by comparing two optical frequency references. One is based on a long-ter…
Direct Terrestrial Test of Lorentz Symmetry in Electrodynamics to 10
M. Nagel, S. R. Parker, E. V. Kovalchuk +5
Lorentz symmetry is a foundational property of modern physics, underlying the standard model of particles and general relativity. It is anticipated that these two theories are low…
Ultra-stable cryogenic optical resonators for tests of fundamental physics
M. Nagel, K. Möhle, K. Döringshoff +3
We present the design and first measurement results for an ultra-stable cryogenically cooled optical sapphire resonator system with a potential relative frequency stability better…
Highly stable piezoelectrically tunable optical cavities
Katharina Möhle, Evgeny V. Kovalchuk, Klaus Döringshoff +2
We have implemented highly stable and tunable frequency references using optical high finesse cavities which incorporate a piezo actuator. As piezo material we used ceramic PZT, cr…
Next-to-Leading Order Transport Coefficients from the Four-Particle Irreducible Effective Action
M. E. Carrington, E. Kovalchuk
Transport coefficients can be obtained from 2-point correlators using the Kubo formulae. It has been shown that the full leading order result for electrical conductivity and (QCD)…
Leading Order QCD Shear Viscosity from the 3PI Effective Action
M. E. Carrington, E. Kovalchuk
In this article we calculate the leading order shear viscosity in QCD using the resummed 3PI effective action. We work to 3-loop order in the effective action. We show that the int…