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September 17, 2025Physical Review LettersOpen Access

Light-Matter Correlation Energy Functional of the Cavity-Coupled Two-Dimensional Electron Gas via Quantum Monte Carlo Simulations

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Authors

LWLukas WeberUniversität InnsbruckMMMiguel A. MoralesFlatiron Health (United States)JFJohannes FlickKarlsruhe Institute of Technology

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Implication

Quantum Monte Carlo simulations demonstrate reduced finite-size effects, suggesting new methods for calculating light-matter correlation energy.

Key Points

  • The study reveals a modified weak-coupling perturbation theory is accurate across a wide parameter range.
  • Results from simulations using QED auxiliary-field quantum Monte Carlo offer a new numerical approach for light-matter interactions.
  • A simple parametrization for light-matter correlation energy is provided, linking cavity parameters and electronic density.
  • This work advances the QED density functional theory, transitioning from analytical to numerical modeling techniques.

Cite This Study

Weber et al. (2025) studied this question.

synapsesocial.com/papers/68d461b631b076d99fa60739https://doi.org/10.1103/lq1y-q74h
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