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Understanding quantum work in a quantum many-body system.

Qian Wang1, H T Quan1,2

  • 1School of Physics, Peking University, Beijing 100871, China.

Physical Review. E
|April 19, 2017
PubMed
Summary
This summary is machine-generated.

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In quantum many-body systems, the quantum work distribution converges to its classical counterpart, demonstrating a correspondence principle even with particle interactions and indistinguishability. This finding supports the definition of quantum work using energy measurements in complex quantum systems.

Area of Science:

  • Quantum Mechanics
  • Statistical Physics
  • Many-Body Systems

Background:

  • Previous studies explored quantum and classical work distributions in single-particle systems (integrable and chaotic).
  • Quantum many-body systems introduce complexities like particle interactions and indistinguishability.

Purpose of the Study:

  • To investigate the correspondence principle between quantum and classical work distributions in a quantum many-body system.
  • To determine if quantum work distributions converge to classical ones in complex many-body scenarios.

Main Methods:

  • Analysis of quantum work distributions in interacting quantum many-body systems.
  • Comparison with classical work distributions in the semiclassical limit.

Main Results:

Related Experiment Videos

  • The quantum work distribution converges to its classical counterpart in the semiclassical limit for many-body systems.
  • This convergence holds despite particle interactions and indistinguishability.

Conclusions:

  • A correspondence principle exists between quantum and classical work distributions in interacting quantum many-body systems.
  • Results justify the definition of quantum work via two-point energy measurements, particularly in the large particle number limit.