Asymmetric Polaron Picture for Quantum Rabi Model
Research Paper#Quantum Physics, Light-Matter Interaction, Quantum Rabi Model, Polaron Physics🔬 Research|Analyzed: Jan 4, 2026 00:17•
Published: Dec 25, 2025 14:09
•1 min read
•ArXivAnalysis
This paper introduces an improved variational method (APP) to analyze the quantum Rabi model, focusing on the physics of quantum phase transitions (QPTs) in the ultra-strong coupling regime. The key innovation is the asymmetric deformation of polarons, which leads to a richer phase diagram and reveals more subtle energy competitions. The APP method improves accuracy and provides insights into the QPT, including the behavior of excited states and its application in quantum metrology.
Key Takeaways
- •Proposes an improved variational method (APP) for the quantum Rabi model.
- •Introduces asymmetric deformation of polarons, leading to a richer phase diagram.
- •Reveals new insights into the quantum phase transition (QPT).
- •Improves accuracy and provides insights into excited states and quantum metrology.
Reference / Citation
View Original"The asymmetric deformation of polarons is missing in the current polaron picture... Our APP not only increases the method accuracy but also reveals more underlying physics concerning the QPT."