Theory of a Nearly Two-Dimensional Dipolar Bose Gas

Abstract

This project develops a theoretical model for gases of bosonic atoms at ultracold, but finite temperatures. Under these circumstances, the gas can undergo a phase transition to a purely quantum mechanical state, a Bose-Einstein condensate (BEC), where the atoms cease to behave like distinguishable entities, and instead form a single macroscopic matter wave. At exactly zero temperature, all of the atoms occupy the BEC; at finite temperatures, a significant fraction of the atoms leave the BEC and form a thermal cloud. Thus, the state of a low, but finite-temperature gas of bosonic atoms involves the coexistence of a BEC and a thermal cloud. Further, the atoms can interact in a variety of different ways, which have important consequences for the state of the gas. We consider both short range contact interactions and dipolar interactions, where the atoms interact via the long-range, anisotropic dipole-dipole force. We develop this model in both three- and two-dimensional geometries.

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Document Details

Document Type
Technical Report
Publication Date
May 11, 2016
Accession Number
AD1013475

Entities

People

  • Michael A. Woulfe

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bose Einstein Condensates
  • Critical Temperature
  • Exclusion Principle
  • Geometry
  • Momentum
  • Phase Transformations
  • Physics
  • Quantum Mechanics
  • Quantum Numbers
  • Quantum Properties
  • Quantum Statistical Mechanics
  • Three Dimensional
  • Transitions
  • Two Dimensional
  • United States Naval Academy
  • Wave Equations
  • Wave Functions

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Strategic Security Studies

Technology Areas

  • Quantum Computing