Non-Perturbative Time-Dependent Quantum Field Evolution

Understand

We present a nonperturbative, first-principles numerical approach for time-dependent problems in the framework of quantum field theory.

• In this approach the time evolution of quantum field systems is treated in real time and at the amplitude level.
• As a test application, we apply this method to QED and study photon emission from an electron in a strong, time-dependent external field.
• Coherent superposition of electron acceleration and photon emission is observed in the nonperturbative regime.