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Information flows in macroscopic Maxwell's demons.

Nahuel Freitas1, Massimiliano Esposito1

  • 1Complex Systems and Statistical Mechanics, Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg, Luxembourg.

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|February 17, 2023
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Summary
This summary is machine-generated.

Maxwell's demon can operate at macroscopic scales if its power supply is scaled correctly. However, its operation is limited by intensive information flow, requiring scaled thermodynamic forces to maintain function in autonomous systems.

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Area of Science:

  • Thermodynamics
  • Statistical Mechanics
  • Information Theory

Background:

  • A recent study proposed a CMOS-based autonomous Maxwell's demon capable of macroscopic operation.
  • The demon's functionality relies on appropriate scaling of its power supply.

Purpose of the Study:

  • To analytically characterize the nonautonomous version of the CMOS-based Maxwell's demon.
  • To investigate system-demon information flows in generic autonomous bipartite systems.
  • To analyze the thermodynamic efficiency of measurement and feedback in Maxwell's demon systems.

Main Methods:

  • Analytical characterization of a nonautonomous Maxwell's demon model.
  • Study of information flow in autonomous bipartite systems.
  • Application of general findings to the autonomous CMOS-based demon.

Main Results:

  • Information flow in Maxwell's demon systems is an intensive quantity.
  • Without appropriate scaling, Maxwell's demon operation ceases at a finite scale.
  • Scaling thermodynamic forces can prevent operational limits.

Conclusions:

  • Maxwell's demon operation is fundamentally limited by intensive information flow.
  • Appropriate scaling of thermodynamic forces is crucial for sustained macroscopic operation.
  • The study provides generalizable insights applicable to autonomous CMOS-based demons.