Traversable wormholes induced by particle creation mechanism: from geometry to observations

In this work, we construct novel traversable wormhole solutions supported by gravitational particle creation mechanism and study their physical viability through energy conditions, throat dynamics and asymptotic behavior. We further study their geometry through the lens of embedding diagrams. Subsequently, we explore their observational signatures, focusing on the shadow structure, quasinormal spectra, and greybody factors obtained via the WKB approximation. In doing so, we aim to provide a comprehensive framework where particle creation naturally sustains traversable wormholes and simultaneously enriches their phenomenology in a testable manner.