String Fluid as a Source of Traversable Rainbow Wormholes

Traversable wormholes can provide spacetime shortcuts. This study provides insight into traversable rainbow wormhole dynamics using string fluid as a source. The mass density, pressure, and string tension of the fluid are obtained by solving the field equations. The dynamics and energy criteria are determined for the three widely recognized rainbow functions’ pairs. The graphical depictions demonstrate the novel nature of the rainbow wormhole’s source matter, which is string fluid. Dark energy and the Casimir effect are caused to violation of strong and null energy conditions. We explored a single example including positive mass density, negative pressure, and negative string tension where all three energy criteria are validated. This case is intriguing with the expanding physical fluid as a source.