Quantum Shock Waves and Domain Walls in the Real-Time Dynamics of a Superfluid Unitary Fermi Gas

Abstract

We show that in the collision of two superfluid fermionic atomic clouds one observes the formation of quantum shock waves as discontinuities in the number density and collective flow velocity. Domain walls, which are topological excitations of the superfluid order parameter, are also generated and exhibit abrupt phase changes by $\pi$ and slower motion than the shock waves. The domain walls are distinct from the gray soliton train or number density ripples formed in the wake of the shock waves and observed in the collisions of superfluid bosonic atomic clouds. Domain walls with opposite phase jumps appear to collide elastically.

published version, 4 pages, 6 figures

References in corpus (9)

• Vortices and Superfluidity in a Strongly Interacting Fermi Gas
• On Dispersive and Classical Shock Waves in Bose-Einstein Condensates and Gas Dynamics
• Viscosity and scale invariance in the unitary Fermi gas
• Formation of Quantum Shock Waves by Merging and Splitting Bose-Einstein Condensates
• Orthogonality catastrophe and shock waves in a non-equilibrium Fermi gas
• Large Amplitude Dynamics of the Pairing Correlations in a Unitary Fermi Gas
• Traveling Dark Solitons in Superfluid Fermi Gases
• Sound propagation in elongated superfluid fermion clouds
• Supersonic and subsonic shock waves in the unitary Fermi gas

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