Exactly soluble model for self-gravitating D-particles with the wormhole

TL;DR

This paper presents an exactly solvable model of a traversable wormhole formed by D-particles in CGHS dilaton gravity, demonstrating how exotic matter stabilizes the wormhole against infalling particles and analyzing its dynamical evolution.

Contribution

It introduces an exact solution for a stable, traversable wormhole with D-particles, incorporating exotic matter to counteract backreaction effects.

Findings

Stable wormhole geometry achieved with exotic matter.

D-particles can traverse the wormhole safely.

Analysis of wormhole throat dynamics and D-particle limit.

Abstract

We consider D-particles coupled to the CGHS dilaton gravity and obtain the exact wormhole geometry and trajectories of D-particles by introducing the exotic matter. The initial static wormhole background is not stable after infalling D-particles due to the classical backreaction of the geometry so that the additional exotic matter source should be introduced for the stability. Then, the traversable wormhole geometry naturally appears and the D-particles can travel through it safely. Finally, we discuss the dynamical evolution of the wormhole throat and the massless limit of D-particles.