Research Paper#Quantum Physics, Lattice Gauge Theory, Non-Hermitian Systems🔬 ResearchAnalyzed: Jan 3, 2026 09:29
Non-Hermiticity Enhances Quantum Revivals in Lattice Gauge Theory
Published:Dec 30, 2025 19:00
•1 min read
•ArXiv
Analysis
This paper investigates the impact of non-Hermiticity on the PXP model, a U(1) lattice gauge theory. Contrary to expectations, the introduction of non-Hermiticity, specifically by differing spin-flip rates, enhances quantum revivals (oscillations) rather than suppressing them. This is a significant finding because it challenges the intuitive understanding of how non-Hermitian effects influence coherent phenomena in quantum systems and provides a new perspective on the stability of dynamically non-trivial modes.
Key Takeaways
- •Non-Hermiticity, introduced through asymmetric spin-flip rates, can enhance quantum revivals in the PXP model.
- •This enhancement is counterintuitive, as non-Hermiticity is often associated with decoherence.
- •The effect can be understood through a similarity transformation mapping the non-Hermitian model to the standard PXP model.
- •The work provides an analytically tractable example of how non-Hermiticity can stabilize coherent many-body modes.
Reference
“The oscillations are instead *enhanced*, decaying much slower than in the PXP limit.”