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Related Experiment Video

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Scanning SQUID Study of Vortex Manipulation by Local Contact
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Published on: February 1, 2017

Variational wave-function study of the triangular lattice supersolid.

Arnab Sen1, Prasenjit Dutt, Kedar Damle

  • 1Department of Theoretical Physics, Tata Institute of Fundamental Research, Mumbai 400005, India.

Physical Review Letters
|June 4, 2008
PubMed
Summary
This summary is machine-generated.

We developed a new wave function to explain the supersolid state in hard-core bosons. This model accurately predicts spontaneous density deviations and the resulting solid order parameter on a triangular lattice.

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Area of Science:

  • Condensed matter physics
  • Quantum mechanics

Background:

  • Supersolid states exhibit both solid-like and superfluid-like properties.
  • Understanding the behavior of hard-core bosons is crucial for quantum simulations.

Purpose of the Study:

  • To explain the behavior of supersolid states formed by hard-core bosons.
  • To develop a variational wave function for systems on a triangular lattice.

Main Methods:

  • A variational wave function was constructed as a superposition of configurations.
  • This wave function enforces a hard constraint on boson-boson repulsion.
  • Exact evaluation of the wave function's properties was performed.

Main Results:

  • The model explains spontaneous density deviation from half-filling.
  • It provides a quantitatively accurate estimate of the solid order parameter.
  • The results address the controversial nature of density deviations in supersolids.

Conclusions:

  • The proposed variational wave function successfully models supersolid behavior.
  • The study confirms spontaneous density deviations as a key feature.
  • This work offers a new theoretical tool for studying quantum many-body systems.