Effective Theory for the Measurement-Induced Phase Transition of Dirac Fermions

• Published in: Physical review. X Vol. 11; no. 4; p. 041004
• Main Authors: Buchhold, M., Minoguchi, Y., Altland, A., Diehl, S.
• Format: Journal Article
• Language: English
• Published: College Park American Physical Society 01.10.2021
• Subjects: Background noise; Competition; Complexity; Decoupling; Degrees of freedom; Distillation; Eigenvectors; Entropy; Evolution; Fermions; Field theory; Magnets; Operators (mathematics); Phase transitions; Quantum entanglement; Quantum field theory; Quantum statistics; Quantum theory; Statistical analysis; Statistical mechanics; Wave functions

A wave function subject to unitary time evolution and exposed to measurements undergoes pure state dynamics, with deterministic unitary and probabilistic measurement-induced state updates, defining a quantum trajectory. For many-particle systems, the competition of these different elements of dynami...