Counterrotational effects on stability of 2+1-dimensional thin-shell wormholes

Understand

The role of angular momentum in a 2+1-dimensional rotating thin-shell wormhole (TSW) is considered.

• Particular emphasis is made on stability when the shells (rings) are counterrotating.
• We find that counter-rotating halves make the TSW supported by the equation of state of a linear gas more stable.
• Under a small velocity dependent perturbation, however, it becomes unstable.