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Updated: Jun 23, 2026
05:59
New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies
Published on: October 6, 2023
Summary
We studied interacting bosons in atomic traps and found that coherence decreases significantly when particle numbers are high. This is due to distinct length scales from external potentials and particle interactions.
Area of Science:
- Quantum mechanics
- Atomic physics
- Condensed matter physics
Background:
- Bosons in atomic traps exhibit complex quantum behaviors.
- Understanding ground state properties is crucial for quantum systems.
Purpose of the Study:
- Investigate the coherence properties of interacting bosons at zero temperature.
- Analyze the influence of particle number on system coherence.
Main Methods:
- Utilized a wave function model for the ground state of interacting bosons.
- Examined order parameters, off-diagonal order, and coherence length.
Main Results:
- Coherence length diminishes significantly as the number of trapped particles increases beyond a threshold.
- Identified two distinct length scales: one from the external potential, another from inter-particle forces.
Conclusions:
- System coherence is limited by the interplay between external trapping and inter-particle interactions.
- The observed behavior suggests a transition in the system's quantum state at higher particle densities.
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