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Updated: Jun 27, 2025
11:33
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
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Reentrant phase behavior in systems with density-induced tunneling
1Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz Univeristy in Poznań, Poznań, Poland.
Scientific Reports
|May 6, 2024
Summary
Correlations in many-particle systems cause quantum decoherence and dissipation without external sources. Surprisingly, strong interactions can restore superfluidity even after coherence is lost.
Area of Science:
- Quantum mechanics
- Condensed matter physics
- Many-body systems
Background:
- Quantum decoherence typically arises from external interactions.
- Understanding dissipation mechanisms in strongly correlated systems is crucial.
Purpose of the Study:
- Investigate intrinsic decoherence and dissipation in many-particle systems.
- Explore the role of interaction strength on quantum coherence and superfluidity.
Main Methods:
- Analytical methods applied to a 2D bosonic many-body system.
- Analysis of extended interactions between particles.
Main Results:
- Correlations induce quantum decoherence and dissipation intrinsically.
- Strong interactions can drive the system to reenter the superfluid phase after coherence loss.
- A natural cutoff at the critical temperature for superfluidity breakdown was identified.
Conclusions:
- Quantum decoherence is an inherent property of strongly interacting systems.
- The interplay between interaction strength and coherence dictates system behavior.
- Preserving inter-particle coupling is key to interpreting decoherence processes.
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