401 citations · 1.3k across the 46 of their papers we have counts for
4 papers · 1 filter
An origin of the Universe determined by quantum physics and relativistic gravity
C. S. Unnikrishnan, G. T. Gillies, R. C. Ritter
We discuss the evolution of the Universe from what might be called its quantum origin. We apply the uncertainty principle to the origin of the Universe with characteristic time sca…
Bose-Einstein Condensation of Metastable Helium
F. Pereira Dos Santos, J. Leonard, Junmin Wang +6
We have observed a Bose-Einstein Condensate in a dilute gas of He in the metastable state. We find a critical temperature of K and a typical number of a…
Efficient magneto-optical trapping of a metastable helium gas
F. Pereira Dos Santos, F. Perales, J. Leonard +6
This article presents a new experiment aiming at BEC of metastable helium atoms. It describes the design of a high flux discharge source of atoms and a robust laser system using a…
Penning collisions of laser-cooled metastable helium atoms
F. Pereira Dos Santos, F. Perales, J. Leonard +6
We present experimental results on the two-body loss rates in a magneto-optical trap of metastable helium atoms. Absolute rates are measured in a systematic way for several laser d…