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Quantum many-body dispersion properties are explored using quantum Drude oscillators. Entanglement distribution and its relation to correlation energy reveal how many-body effects influence pair potentials in chemical systems.

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Area of Science:

  • Quantum mechanics
  • Condensed matter physics
  • Computational chemistry

Background:

  • The quantum many-body properties of dispersion forces are not well understood.
  • Dispersion interactions are ubiquitous in chemical systems.
  • Quantum Drude oscillators serve as minimal models for dispersion-bound systems.

Purpose of the Study:

  • To investigate entanglement distribution in assemblies of quantum Drude oscillators.
  • To establish an analytic relationship between entanglement and correlation energy.
  • To determine how entanglement monogamy affects many-body corrections to pair potentials.

Main Methods:

  • Utilizing quantum Drude oscillators as model systems.
  • Analyzing entanglement distribution within these assemblies.
  • Deriving analytic relationships between quantum entanglement and correlation energy.

Main Results:

  • An analytic relationship between entanglement and correlation energy was established.
  • Entanglement monogamy was shown to dictate the nature (attractive, repulsive, or zero) of many-body corrections to pair potentials.
  • Findings were demonstrated in trimers and extended lattices.

Conclusions:

  • The study provides fundamental insights into the quantum many-body nature of dispersion.
  • The findings have implications for understanding chemical environments where dispersion interacts with other cohesive forces.
  • This work offers a framework for analyzing entanglement in condensed matter and chemical systems.