Experimental and Observational Constraints on Wormhole Models

Dear Colleagues,

In recent years, groundbreaking experimental advances have propelled a transition of gravitational physics in the strong field regime from a mostly theoretical domain into an increasingly experimental science. The detection of gravitational waves, the imaging of the shadow of a supermassive compact object, and the observation of flares near the center of the Milky Way have provided unprecedented opportunities to test the limits of theoretical physics, including the nature of one of the most fascinating astronomical models, the wormhole, a passage through spacetime that could potentially enable travel over large distances or even through time. Current research on wormhole models faces significant challenges, from the requirement of unobserved matter forms in classical general relativity to stabilize the wormhole throat, to modifications of gravitational theory itself, alongside other physical and mathematical limitations. As such, the development of physically relevant wormhole models remains a timely and relevant task in the field of theoretical physics.

The goal of this Special Issue is to gather a compilation of manuscripts focused on the development and testing of suitable wormhole models that are potentially compatible with state-of-the-art experimental and observational results in order to assess the plausibility of the existence or construction of wormholes in our universe.

Dr. João Luís de Figueiredo Rosa
Guest Editor

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