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Updated: Aug 20, 2025
12:45
Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images
Published on: August 31, 2022
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Chaos-assisted many-body tunnelling.
Urbashi Satpathi1, Sayak Ray1,2, Amichay Vardi1
1Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
Physical Review. E
|November 18, 2022
Summary
We found that chaos enhances many-body dynamical tunneling between Bose-Josephson junctions. Tunneling rates fluctuate significantly with small changes in system parameters or particle number.
Area of Science:
- Quantum physics
- Atomic physics
- Condensed matter physics
Background:
- Bose-Josephson junctions exhibit complex dynamics.
- The interplay between chaos and quantum phenomena is a key area of research.
Purpose of the Study:
- To investigate the influence of chaos on many-body dynamical tunneling.
- To analyze the tunneling gap between macroscopic Schrödinger cat states in coupled Bose-Josephson junctions.
Main Methods:
- Analysis of the classical phase space structure.
- Studying the mixed phase space with quasi-integrable islands and a chaotic sea.
- Investigating many-body dynamical tunneling rates.
Main Results:
- The composite system displays a mixed phase space.
- Many-body dynamical tunneling is enhanced by chaos.
- Tunneling rates exhibit large fluctuations (several orders of magnitude) with minor parameter or particle number variations.
Conclusions:
- Chaos plays a crucial role in enhancing quantum tunneling in many-body systems.
- The system's sensitivity to parameters highlights the delicate nature of quantum states.
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