Modern low-temperature physics began with the liquefaction of helium by Kamerlingh
Onnes (1908) and the discovery of superconductivity (Kamerlingh Onnes, 1911) at the …

Page 1 EXPERIMENTAL Group CRC CRC Taylor & Francis Press TECHNIQUES IN
CONDENSED MATTER PHYSICS AT LOW TEMPERATURES EDITED BY ROBERT C …

Ultrasound has played a key role in the development of our understanding of superfluid
3He. In this chapter, we review the information that can be obtained from such experiments …

My contribution to this collection of articles in honor of David Lee and John Reppy on their
90th birthdays is a reflection on the remarkable phenomenology of the excitation spectra of …

The recently observed new collective mode in the zero-sound propagation in He 3-B is
shown experimentally to split linearly with magnetic field into five components and to display …

In superfluids the order parameter, which describes spontaneous symmetry breaking, is an
analogue of the Higgs field in the Standard Model of particle physics. Oscillations of the field …

First-order phase transitions in the very early universe are a prediction of many extensions of
the Standard Model of particle physics and could provide the departure from equilibrium …

We report observations of nonlinear phenomena in the propagation of zero-sound pulses
near a collective-mode attenuation peak in He 3-B. These include saturation of the sound …

A recently observed second collective-mode peak in the sound absorption in He 3-B is
shown to arise from weak excitation of a known order-parameter mode with weak-coupling …

The frequencies of B-phase order-parameter modes are calculated with l>~ 1 pairing
interactions and all Landau parameters included. The two modes that have been observed …