Entanglement scaling and dynamics in the Sauter-Schwinger effect

• URL: http://arxiv.org/abs/2601.14390v1
• Date: Tue, 20 Jan 2026 19:00:20 GMT
• Title: Entanglement scaling and dynamics in the Sauter-Schwinger effect
• Authors: S. Mahesh Chandran, Karthik Rajeev,
• Abstract summary: We study the evolution and geometric scaling of entanglement entropy in a nonperturbative, strong-field QED setting.<n>We show that the entanglement entropy undergoes a transition from area-law to a volume-law scaling for certain strong-field regimes.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In quantum field theory, entanglement entropy under spatial bipartitioning serves as a powerful information-theoretic probe of quantum correlations. In this work, we present the first comprehensive numerical study of the dynamical evolution and geometric scaling of entanglement entropy in a nonperturbative, strong-field QED setting -- specifically, in the context of the Sauter-Schwinger effect. While the weak-field regime is dominated by area-law states, we show that the entanglement entropy undergoes a transition from area-law to a volume-law scaling for certain strong-field regimes in the pulse-profile parameter space -- signaling a fundamental shift in the underlying correlation structure induced by nonperturbative pair production. For intermediate regimes, the scaling is a power-law that interpolates between area- and volume-law behavior. Finally, we provide interpretations based on the behavior of the low-energy pair-creation spectrum and discuss how these insights could inform future investigations of related phenomena.

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