Nonequilibrium relaxation transport of ultracold atoms

Abstract

We analyze the equilibration process between two either fermionic or bosonic reservoirs containing ultracold atoms with a fixed total number of particles that are weakly connected via a few-level quantum system. We allow for both the temperatures and particle densities of the reservoirs to evolve in time. Subsequently, linearizing the resulting equations enables us to characterize the equilibration process and its time scales in terms of equilibrium reservoir properties and linear-response transport coefficients. Additionally, we investigate the use of such a device as particle transistor or particle capacitor and analyze its efficiency.

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• Clausius Inequality for Finite Baths Reveals Universal Efficiency Improvements
• Perspective on new implementations of atomtronic circuits
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• Challenges and constraints of dynamically emerged source and sink in atomtronic circuits: From closed-system to open-system approaches
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• Coherent Long-Range Thermoelectrics in Nonadiabatic Driven Quantum Systems
• Bosonic Josephson effect in the Fano-Anderson model
• Microscopic contributions to the entropy production at all times: From nonequilibrium steady states to global thermalization
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