#solition

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Outreach Summary: Suppressed Solitonic Cascade in Spin-Imbalanced Superfluid Fermi Gas, Phys. Rev. Lett. 120, 253002 (2018)

Here is an outreach summary of our recent work:

“Exploring a terra incognita - spin-imbalanced superfluid Fermi gas” Superfluidity in ultracold fermionic gases is a fascinating phenomenon. It allows for persistent currents, where a fluid flows without any energy losses. However, not every atom is allowed to participate in the “superflow” – only those which are able to find a partner with an opposite spin. Recently, physicists from Warsaw University of Technology revealed how the superfluid dynamics look like in the gas where numbers of spin-up and spin-down atoms are imbalanced. As it might be experienced in your life – when you participate in a folk dance party where the numbers of men and women are imbalanced, someone would be frustrated as he/she cannot form a pair. So, what happens with unpaired atoms? The physicists found that they like to be sucked into various solitonic structures – objects that can maintain their shape while propagate in the system. Depending on amount of unpaired atoms in the system, decay patterns of solitonic objects changes dramatically. They end up with different stages, “dark soliton,” “vortex ring” or “vortex line,” determined by the spin polarization. Exploring a new degree of freedom of atomic gases: spin-polarization, brought scientists from Warsaw into a terra incognita - a field where new phases can appear and qualitative new effects emerge.

An example of our simulation:

The main article: G. Wlazłowski, K. Sekizawa, M. Marchwiany, and P. Magierski, Suppressed Solitonic Cascade in Spin-Imbalanced Superfluid Fermi Gas, Phys. Rev. Lett. 120, 253002 (2018)

DOI: https://doi.org/10.1103/PhysRevLett.120.253002

Both yesterday and today I have been trying to find work and text that can relate to my magazine layout study

I have looked online into the catalogues of two different libaries, which it is possible for me to get to.

Some of the books I cannot take out, this is a pain for me as I cannot reach the photocopier to take photographs. I can always take photographs, but these did not turn out as well as I hoped last time. This was because of the distance between the table and me sitting in my wheelchair is not that high, I cannot take a picture of the whole page.

I have been advised in a way to fix this, using a selfie stick to position my phone higher so that the whole page can be seen in the camera.