Cosmology with Ultracold Atoms (Mark Fromhold & Lucia Hackermuller)

[@talks_curator728]

*Index to Key Parts of the Talk* [00:00] Shaun's intro [01:04] Opening remarks by Lucia and Mark [04:47] Timing & enabling investments in Quantum 2.0 technologies [09:18] How are atoms cooled to

[@diegoalejandrosanchezherre4788]

very remarcable talk!! thank you for it

[@modqft5]

I wrote a PhD on the theoretical physics of ultracold atoms. It seemed to me that this topic was very far from cosmology and I switched to particle physics.

[@CosmologyTalks]

At a fundamental level cold atoms and cosmology are certainly far apart, but cold atoms can create such extreme situations that they can be used to test new fundamental physics laws/particles that wouldn't show up anywhere else. For example the stuff discussed in the video, where a domain wall in a dark matter field could get trapped in a cold atom lab.

[@diegoalejandrosanchezherre4788]

i have a Little question, the dark walls potentially solve dark energy or dark matter?? beacuase i hear one thing but also read the other??

[@CosmologyTalks]

I wouldn't quite frame it as the dark walls "solving" either dark matter or dark energy. Instead, they would be evidence of the existence of a "dark sector". By "dark sector" I mean some collection of fields that exist but don't interact much with the visible fields. There are well motivated models of dark sectors where their interaction strength with the visible fields is stronger in low density (i.e. vacuum) environments. These are the ones that would have domain walls that get trapped in an experiment like this. The detected dark sector itself could be either dark matter, dark energy, or something entirely different, depending on its density and pressure.

[@diegoalejandrosanchezherre4788]

@@CosmologyTalks ohh i see, very interesting, i hope they can put forward this research as soon as posible, maybe they can find an "axionic" filed or something like that, thank you for your answer 🤙