Klein Paradox Re-examined with Quantum Field Theory
Published:Dec 31, 2025 10:35
•1 min read
•ArXiv
Analysis
This paper provides a quantum field theory perspective on the Klein paradox, a phenomenon where particles can tunnel through a potential barrier with seemingly paradoxical behavior. The authors analyze the particle current induced by a strong electric potential, considering different scenarios like constant, rapidly switched-on, and finite-duration potentials. The work clarifies the behavior of particle currents and offers a physical interpretation, contributing to a deeper understanding of quantum field theory in extreme conditions.
Key Takeaways
- •Provides a quantum field theory analysis of the Klein paradox.
- •Calculates particle current under various electric potential scenarios.
- •Clarifies the behavior of particle currents and offers physical interpretations.
- •Contributes to a deeper understanding of quantum field theory in extreme conditions.
Reference
“The paper calculates the expectation value of the particle current induced by a strong step-like electric potential in 1+1 dimensions, and recovers the standard current in various scenarios.”