Wormholes between Universes: Three Approaches and the Place of the G-Switching Model

The article systematizes three approaches to the problem of inter-universe transitions (wormholes, tunnels, bridges): wormholes in general relativity (Morris–Thorne, Visser), quantum tunneling between universes (Vilenkin, Linde, Coleman–De Luccia), and G-switching within the "everything is already here" model (the author). It is shown that in contemporary physics there is no consensus regarding the nature of inter-universe transitions. The comparison is conducted according to six criteria: the necessity of exotic matter, required energies, stability of the transition, presence of a geometric picture, verifiability (including falsifiability), and connection with principle G and EFOS. Wormholes require exotic matter with negative energy density and Planck energies for their creation. They are unstable: quantum fluctuations lead to collapse within Planck time. Quantum tunneling does not provide a geometric picture: it is unclear what exactly "tunnels." It also does not create a channel of communication between existing universes. The key idea of G-switching: all elements of reality already exist in a single volume; different universes are different sets of active elements. The transition is accomplished not by creating a wormhole, but by activating an already existing topological fold between two G-ontologicals. This removes the question of the energy of switching and of causality. Exotic matter is not needed. The fold exists independently of the transition. Verifiable consequences are discussed: anomalies in the cosmic microwave background, H0 tension, anomalies in the distribution of galaxies, vacuum fluctuations. Objections and responses to them are presented. It is emphasized that the G-switching model is itself hypothetical and can be refuted if the predicted anomalies are not detected. The article does not assert the superiority of G-switching over other approaches; it shows that this model does not encounter those problems characteristic of traditional models. All conclusions are open to criticism.