Venue (HYBRID-EVENT): Goldene Box, Physikalisches Institut, INF 226, 69120 Heidelberg AND all talks will also be streamed via the permanent Zoom-link:
Meeting ID: 946 0240 1603
14:00-14.15 discussion and questions
Speaker: Dr. Stefan Lannig
Title of Talk: Observation of two Distinct Non-Thermal Fixed-Points in a Spinor Condensate
Ultacold gases provide an unprecedented level of simultaneous control over interactions and access to the relevant observables for probing many-body dynamics in non-equilibrium scenarios. In our experiments on a quasi-1d Bose-Einstein condensate of $^87$Rb we observe a self-similar scaling evolution in the momentum-resolved transverse spin structure factor after a quench.
We prepare two different initial conditions, one consisting of a homogeneous system and one with additional perturbations initialized via local spin rotations. The latter leads to strong spin fluctuations in the ensuing dynamics. These are characterized by persistent correlations between depletions in the spin length and the spatial gradient of the Larmor phase.
For these two initial conditions we detect the emergence of two distinct types of self-similar dynamics, characterized by different scaling exponents.
The aim of the YRC Lunch Seminar is to promote individual research done by young researchers within Isoquant and create a regular platform to socialize and share ideas.
The seminar will take place in presence in accordance with the current COVID-19 regulations for on-site events (Please wear a FFP2 mask or surgical mask if the minimum distance of 1.5m can not be guaranteed).