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Area of Science:

  • Condensed Matter Physics
  • Quantum Mechanics
  • Materials Science

Background:

  • Electron-boson scattering is crucial for understanding material properties.
  • Existing models often rely on approximations like weak-coupling or semiclassical treatments.
  • The role of quantum localization in the absence of disorder is not fully understood.

Purpose of the Study:

  • To investigate electron-boson scattering beyond common approximations.
  • To explore quantum localization phenomena at finite temperatures.
  • To identify mechanisms behind anomalous metallic behavior.

Main Methods:

  • Numerically exact calculations.
  • Analysis of electron-boson scattering at finite temperatures.
  • Investigation of optical absorption and conductivity.

Main Results:

  • Demonstrated a regime of quantum localization driven by thermal boson populations.
  • Observed transient localization effective before diffusion.
  • Identified a displaced Drude peak in optical absorption.
  • Found suppression of conductivity.

Conclusions:

  • Quantum localization can arise from dynamical randomness due to thermal bosons.
  • Transient localization offers a new explanation for anomalous metallic behavior.
  • Findings provide a general mechanism applicable to interacting quantum matter.