ePhysics

This simulation is meant to accompany I. Satija et al., Phys. Rev. A 79, 033616 (2009): Symmetry-breaking and symmetry-restoring dynamics of a mixture of Bose-Einstein condensates in a double well.

Below you will find demonstrations of the simulation exhibiting various modes. Information on downloading the simulation may be found at the bottom of the page.

Josephson Oscillations (JO)

Josephson Oscillations about
φ=0

• Λ_a = Λ_b = 0.2
• Λ_ab = 0.426   (2.13
  Λ_a)
• z_a  = 0.1
• z_b  = 0.2
• φ_a = 
  φ_b = 0

Josephson Oscillations about
φ=π

• Λ_a = Λ_b = 0.2
• Λ_ab = 0.426   (2.13
  Λ_a)
• z_a  = 0.1
• z_b  = 0.2
• φ_a = 
  φ_b = π

Macroscopic Quantum Self Trapping (MQST)

MQST With Phase Separation

• Λ_a = Λ_b = 2
• Λ_ab = 4.26   (2.13
  Λ_a)
• z_a  = 0.1
• z_b  = 0.2
• φ_a = 
  φ_b = 0

MQST Without Phase Separation

• Λ_a = Λ_b = 2
• Λ_ab = 4.26   (2.13
  Λ_a)
• z_a  = 0.1
• z_b  = 0.2
• φ_a = 
  φ_b = π

Phase Swapping

• Λ_a = Λ_b = 2
• Λ_ab = 4.26   (2.13
  Λ_a)
• z_a  = 0.225
• z_b  = 0.25
• φ_a = 
  φ_b = 0

Chaos

• Λ_a = Λ_b = 2
• Λ_ab = 4.26   (2.13
  Λ_a)
• f_a  = 0.6
• f_b  = 0.4
• z_a  = z_b  = 0.3
• φ_a = π
• φ_b = 0

Varying Λ_ab

Initially Josephson Oscillations about
φ=0

• Λ_a = Λ_b = 0.2
• z_a  = 0.2
• z_b  = 0.1
• φ_a = 
  φ_b = 0

Initially Josephson Oscillations about
φ=π

• Λ_a = Λ_b = 0.2
• z_a  = 0.2
• z_b  = 0.1
• φ_a = 
  φ_b = π

Initially MQST

• Λ_a = 3
• Λ_b = 4
• z_a  = 0.441
• z_b  = 0.4677
• φ_a = 
  φ_b = π

Initially, species "a" exhibits MQST while species "b" exhibits Josephson Oscillations

• Λ_a = 4
• Λ_b = 2
• z_a  = 0.4796
• z_b  = 0.2
• φ_a = π
• φ_b = 0;

Download the simulation

This simulation, and its source code, is licensed under the GNU General Public License (GPL).

• Download for Windows
• Download for Linux
• Source code (zip | tar.gz)
  • Requires the Irrlicht Engine

The Linux version may/may not run on a Mac.