42 citations · 105 across the 9 of their papers we have counts for
9 papers
A Gallery of Soft Modes: Theory and Experiment at a Ferromagnetic Quantum Phase Transition
P. C. E. Stamp, D. M. Silevitch, M. Libersky +3
We examine the low-energy excitations in the vicinity of the quantum critical point in LiHoF, a physical realization of the Transverse Field Ising Model, focusing on the long-r…
Testing Quantum Gravity using Pulsed Optomechanical Systems
Jordan Wilson-Gerow, Yanbei Chen, P. C. E. Stamp
An interesting idea, dating back to Feynman, argues that quantum mechanics may break down for large masses if one entertains the possibility that gravity can be "classical", thereb…
Quantum Barkhausen Noise Induced by Domain Wall Co-Tunneling
C. Simon, D. M. Silevitch, P. C. E. Stamp +1
Most macroscopic magnetic phenomena (including magnetic hysteresis) are typically understood classically. Here, we examine the dynamics of a uniaxial rare-earth ferromagnet deep wi…
Direct Observation of Collective Electronuclear Modes About a Quantum Critical Point
M. Libersky, R. D. McKenzie, D. M. Silevitch +2
We directly measure the low energy excitation modes of the quantum Ising magnet LiHoF using microwave spectroscopy. Instead of a single electronic mode, we find a set of collec…
Propagators in the Correlated Worldline Theory of Quantum Gravity
Jordan Wilson-Gerow, P. C. E. Stamp
Starting from a formulation of Correlated Worldline (CWL) theory in terms of functional integrals over paths, we define propagators for particles and matter fields in this theory.…
Gauge Invariant Propagators and States in Quantum Electrodynamics
Jordan Wilson-Gerow, P. C. E. Stamp
We study gauge invariant states in QED, where states are understood in terms of data living on the boundary of gauge invariant path-integrals. This is done for both scalar and spin…