57 citations · 250 across the 10 of their papers we have counts for
10 papers
Does Dark Matter Consist of Cosmic String Remnants?
Richard Packard
If cosmic strings have an irreducible core, then dark matter may consist of entities that are core-sized string remnants. As such they may interact solely by gravity. These talons…
Speculation On a Source of Dark Matter
Richard E. Packard
By drawing an analogy with superfluid 4He vortices we suggest that dark matter may consist of irreducibly small remnants of cosmic strings.
Flux locking a superfluid interferometer
Yuki Sato, Aditya Joshi, Richard Packard
We demonstrate a flux locking technique using injected heat current to linearize the output of a superfluid helium-4 interferometer. A rotation flux through the interferometer loop…
Direct measurement of quantum phase gradients in superfluid 4He flow
Yuki Sato, Aditya Joshi, Richard Packard
We report a new kind of experiment in which we generate a known superfluid velocity in a straight tube and directly determine the phase difference across the tube's ends using a su…
Transition from synchronous to asynchronous superfluid phase slippage in an aperture array
Y. Sato, E. Hoskinson, R. E. Packard
We have investigated the dynamics of superfluid phase slippage in an array of apertures. The magnitude of the dissipative phase slips shows that they occur simultaneously in all th…
A superfluid 4He interferometer operating near 2 K
Emile Hoskinson, Yuki Sato, Richard Packard
Matter-wave interferometers reveal some of the most fascinating phenomena of the quantum world. Phase shifts due to rotation (the Sagnac effect) for neutrons, free atoms and superf…