Abstract
We Unravel The Correlation Effects Of The Second-Order Quantum Phase Transitions Emerging On The Ground State Of A Harmonically Trapped Spin-1 Bose Gas, Upon Varying The Involved Zeeman Terms, As Well As Its Breathing Dynamics Triggered By Quenching The Trapping Frequency. It Is Found That The Boundaries Of The Associated Magnetic Phases Are Altered In The Presence Of Interparticle Correlations For Both Ferromagnetic And Antiferromagnetic Spin-Spin Interactions, An Effect Which Becomes More Prominent In The Few-Body Scenario. Most Importantly, We Unveil A Correlation-Induced Shrinking Of The Antiferromagnetic And Broken-Axisymmetry Phases Implying That Ground States With Bosons Polarized In A Single Spin Component Are Favored. Turning To The Dynamical Response Of The Spinor Gas It Is Shown That Its Breathing Frequency Is Independent Of The System Parameters While Correlations Lead To The Formation Of Filamentary Patterns In The One-Body Density Of The Participating Components. The Number Of Filaments Is Larger For Increasing Spin-Independent Interaction Strengths Or For Smaller Particle Numbers. Each Filament Maintains Its Coherence And Exhibits An Anticorrelated Behavior While Distinct Filaments Show Significant Losses Of Coherence And Are Two-Body Correlated. Interestingly, We Demonstrate That For An Initial Broken-Axisymmetry Phase An Enhanced Spin-Flip Dynamics Takes Place Which Can Be Tuned Either Via The Linear Zeeman Term Or The Quench Amplitude.
Recommended Citation
K. M. Mittal et al., "Many-Body Effects On Second-Order Phase Transitions In Spinor Bose-Einstein Condensates And Breathing Dynamics," Physical Review A, vol. 102, no. 1, article no. 013302, American Physical Society, Jul 2020.
The definitive version is available at https://doi.org/10.1103/PhysRevA.102.013302
Department(s)
Physics
International Standard Serial Number (ISSN)
2469-9934; 2469-9926
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
01 Jul 2020
Comments
National Science Foundation, Grant DMS-1809074