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Researchers minimized dissipated work in finite-time thermodynamics by using collective protocols for N-body systems. This approach reduces work scaling with system size N, improving efficiency and approaching fundamental limits.

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Area of Science:

  • Thermodynamics
  • Statistical Mechanics
  • Quantum Information

Background:

  • Finite-time thermodynamics aims to minimize energy dissipation during system state manipulation.
  • Dissipated work (W_diss) in N-body systems typically scales linearly with N for noninteracting protocols.

Purpose of the Study:

  • To investigate methods for reducing dissipated work in finite-time thermodynamic processes for N-body systems.
  • To explore the potential of collective protocols in minimizing W_diss.

Main Methods:

  • Analysis of N-body systems with identical, uncorrelated initial and final states.
  • Development and application of collective protocols involving induced interactions.
  • Derivation of fundamental limits for collective advantages.

Main Results:

  • Collective protocols can dramatically reduce W_diss compared to noninteracting protocols.
  • Achieved sublinear growth of W_diss with N (W_diss ∝ N^x, x<1), with x=0 theoretically possible using long-range interactions.
  • Demonstrated noticeable gains in spin models with two-body interactions.

Conclusions:

  • Collective protocols offer a powerful strategy for enhancing efficiency in finite-time thermodynamic processes.
  • The findings have implications for energy efficiency and information erasure, accelerating convergence to Landauer's bound.