TY  - GEN
AV  - public
Y1  - 2025///
ID  - heidok36739
N2  - This thesis reports on the exploration of collective behavior in a system of few fermionic atoms.
Access to both real- and momentum space observables in combination with a high degree of
control over both particle number and interaction strength allows us to explore the emergence
of collective behavior from the bottom up - atom by atom.
Inspired by observations in high-energy physics, where hydrodynamic behavior is present in
absence of a separation of scales, we explore interaction-driven elliptic flow which is commonly
considered a smoking-gun of hydrodynamic behavior. Our measurements reveal elliptic flow in
systems of only six constituents.
Motivated by the formation of pairs of fermionic particles in system with broken translational
symmetry (such as atomic nuclei or ?dirty? superconductors), where BCS theory does not apply,
we investigate how a spatially varying potential affects pair formation. By altering interaction
strength and particle number, we observe a transition from a regime in which pair formation
is determined by the discrete level structure of the potential to a regime in which the potential
only influences pairing by altering the local density.
A1  - Brandstetter, Sandra Anna
CY  - Heidelberg
TI  - Collective Behavior in Few-Fermion Systems
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/36739/
ER  -