Quantum kinetic theory of light-matter interactions in degenerate plasmas
arXiv:2410.05917 · doi:10.1103/PhysRevA.110.063519
Abstract
A rigorous treatment of light-matter interactions typically requires an interacting quantum field theory. However, most applications of interest are handled using classical or semiclassical models, which are valid only when quantum-field fluctuations can be neglected. This approximation breaks down in scenarios involving large light intensities or degenerate matter, where additional quantum effects become significant. In this work, we address these limitations by developing a quantum kinetic framework that treats both light and matter fields on equal footing, naturally incorporating both linear and nonlinear interactions. To accurately account for light fluctuations, we introduce a photon distribution function that, together with the classical electromagnetic fields, provides a better description of the photon fluid. From this formalism, we derive kinetic equations from first principles that recover classical electrodynamical results while revealing couplings that are absent in the corresponding classical theory. Furthermore, by addressing the Coulomb interaction in the Hartree-Fock approximation, we include the role of fermionic exchange exactly in both kinetic and fluid regimes through a generalized Fock potential. The latter provides corrections not only to the electrostatic forces but also to the plasma velocity fields, which become significant in degenerate conditions.
Quantum kinetic theory, light matter interaction, quantum degeneracy, warm dense matter, laser-plasma interaction
References in corpus (16)
- Bose-Einstein condensation of photons in an optical microcavity
- A Massive Core in Jupiter Predicted From First-Principles Simulations
- Hydrogen-Helium Mixtures in the Interiors of Giant Planets
- First-Principles Equation of State Database for Warm Dense Matter Computation
- Multiphoton Effects Enhanced Due to Ultrafast Photon-Number Fluctuations
- Photon lasing in a GaAs microcavity: similarities with a polariton condensate
- Electron-ion scattering in dense multi-component plasmas: application to the outer crust of an accreting neutron star
- Photon Bubbles and the Vertical Structure of Accretion Disks
- Exchange effects in magnetized quantum plasmas
- Hyperbolic Bloch equations: atom-cluster kinetics of an interacting Bose gas
- Light-matter interaction at the transition between cavity and waveguide QED
- Collisional strong-field QED kinetic equations from first principles
- All-optical GeV electron bunch generation in a laser-plasma accelerator via truncated-channel injection
- Excitation picture of an interacting Bose gas
- Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma
- Photon-photon correlation of condensed light in a microcavity