Attosecond Nonlinear Quantum Electrodynamics in Laser-Driven Plasmas via Two-Photon Synchrotron Emission
This paper proposes that ultrafast strong-field laser-plasma interactions can serve as a self-contained framework for relativistic nonlinear quantum electrodynamics by generating attosecond bursts of two-photon synchrotron emission from laser-accelerated electrons, thereby providing a distinct pathway to isolate and study quantum phenomena without requiring external relativistic particle beams.