Quantum Molecular Dynamics Simulation of Electron Bubbles in a Dense Helium Gas
In recent years, mixed quantum-classical systems consisting of excess electrons interacting with classical many-body systems at finite temperatures have been studied extensively with computer-simulation techniques1. The simulation methods for these systems include the path integral Monte Carlo1 or molecular dynamics2 and dynamical simulated annealing3. The latter can only provide the ground-state static properties of the quantum particles. The path integral approach has been used successfully to calculate the equilibrium properties, but the study of time correlation functions4 is not reliable at long times. However, the recently developed quantum molecular dynamics method, which deals directly with the time-dependent Schrödinger equation, contains all the dynamical information for quantum particles.
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