Finite-time thermal refrigerator in interacting Bose-Einstein Condensates
arXiv:2602.23074 · doi:10.1103/89ff-kqdy
Abstract
We study a finite-time thermodynamic refrigeration cycle realized numerically in three-dimensional, weakly interacting Bose-Einstein condensates (BECs). The setup consists of three spatially separated condensates -- system, piston, and reservoir -- coupled through time-dependent potential barriers that implement compression, expansion, and contact strokes. Finite-temperature initial states are generated with the Stochastic Ginzburg-Landau equation, and the subsequent dynamics are evolved using the truncated Gross-Pitaevskii equation. To measure temperatures we use a momentum-space thermometry method that provides estimates for each condensate. We find that despite mass transfer and sound excitations, the protocol achieves successful cooling during consecutive cycles: the first cycle lowers its temperature by ~20%, and a second cycle yields additional, though reduced, cooling, reaching a final ~27% cooling from the initial state. Our results show that interacting BECs can sustain finite-time quantum thermal cycles under realistic conditions, and provide a platform for exploring different refrigeration schemes, optimized control protocols, and shortcuts to adiabaticity.
9 pages, 7 figures
References in corpus (30)
- Theory of Bose-Einstein condensation in trapped gases
- Quantum Thermodynamics
- A single-atom heat engine
- Single ion heat engine with maximum efficiency at maximum power
- Finite Temperature Models of Bose-Einstein Condensation
- A spin heat engine coupled to a harmonic-oscillator flywheel
- Quantum thermodynamic devices: from theoretical proposals to experimental reality
- Extracting work from quantum measurement in Maxwell demon engines
- Quantum thermal absorption machines: refrigerators, engines and clocks
- Coherence effects in the performance of the quantum Otto heat engine
- Efficient Quantum Measurement Engine
- Quantum correlations and thermodynamic performances of two-qubit engines with local and collective baths
- Observation of deviations from ideal gas thermodynamics in a trapped Bose-Einstein condensed gas
- Isolated quantum heat engine
- Quantum Engines and Refrigerators
- Energy cascade with small-scales thermalization, counterflow metastability and anomalous velocity of vortex rings in Fourier-truncated Gross-Pitaevskii equation
- An efficient non-linear Feshbach engine
- Making statistics work: a quantum engine in the BEC-BCS crossover
- Quantum finite-time thermodynamics: insight from a single qubit engine
- Quantum measurement engines and their relevance for quantum interpretations
- Quantum field thermal machines
- Quantitative estimation of effective viscosity in quantum turbulence
- Quantized refrigerator for an atomic cloud
- A Feshbach engine in the Thomas-Fermi regime
- Thermodynamic engine with a quantum degenerate working fluid
- A finite-time quantum Otto engine with tunnel coupled one-dimensional Bose gases
- Quantum heat engine based on a spin-orbit and Zeeman-coupled Bose-Einstein condensate
- Quantum engines with interacting Bose-Einstein condensates
- Thermalized Abrikosov lattices from decaying turbulence in rotating BECs
- Quantum thermodynamics of Gross-Pitaevskii qubits