Since the realisation by Bose and Einstein in 1924 that the quantum ground state of a system is special in many ways, researchers have worked towards creating a quantum system with many particles occupying that ground state, now called a Bose-Einstein Condensate (BEC), with the first successful demonstration in 1995.
Here, we argue that BECs can be formed in non-ground states as we recently demonstrated and that the laboratory ground state does not have zero kinetic energy, as asserted by Einstein in 1925. We show that some naïve transformations in the literature have mistakenly supported the zero-kinetic energy ground state argument.
With this paper, we clarify the necessary conditions for a Bose condensate and pave the way for future experiments with non-ground state condensates.
The paper can be found here:
“A Bose-Einstein condensate is a Bose condensate in the laboratory ground state” published online and to appear in the October print issue with Proceedings of the Royal Society A. 477, p.20210465 doi: 10.1098/rspa.2021.0465
After many months of data crunching, the paper on Thermalisation of a Spin-Orbit coupled Bose Gas is finally online, and submitted to PRL. Find the abstract here:
A paper reviewing measurements of the size of the helium nucleus, which is also known as the article, was published today. The link is here: The size of the helium nucleus: then and now.
This is an easy-to-read review and should be accessible to most physicists. It was written for the Rutherford anniversary edition of the Journal of the Royal Society of New Zealand. Enjoy!
After many revisions and new insight into the physics, this paper is now published. Well done Sophie! You can find it here:
Computing the eigenstate localisation length at very low energies from Localisation Landscape Theory
Sophie S. Shamailov, Dylan J. Brown, Thomas A. Haase, Maarten D. Hoogerland
SciPost Phys. Core 4, 017 (2021).
is published here:
After many years of experiments and theoretical analysis our paper on Anderson localisation got published in Nature Communications! It can be accessed here:
The long awaited on Anderson localisation is now submitted. For all details, see the paper on http://arxiv.org/abs/1911.04858
At the ICOLS conference, 5-8 July 2019, we had the honour of having Nobel Prize winner Eric Cornell here in New Zealand. Hereby a link to an article in the Otago Daily Times.