We present Euclidean wormhole solutions describing possible bridges within the multiverse. The study is carried out in the framework of third quantisation. The matter content is modelled through a scalar field which supports the existence of a whole collection of universes. The instanton solutions describe Euclidean solutions that connect baby universes with asymptotically de Sitter universes. ...

There are two effects of extra matter fields on the Lorentzian traversable wormhole. The “primary effect” says that the extra matter can afford to be a part of source or whole source of the wormhole when the wormhole is being formed. Thus the matter does not affect the stability of wormhole and the wormhole is still safe. If the extra matter is extotic, it can be the whole part of the source of...

Wormhole travel through a Morris-Thorne-Kuhfittig metric is described. Kuhfittig’s description of a traversable wormhole is revisited, and the Morris-Thorne engineering requirements for traversable wormholes are discussed at length, giving useful parameters for physical size, mass, interior geometry, travel times, constraints upon velocity, tidal forces, and stability regimes. Wormhole construc...

A wormhole is a hypothetical tunnel through space. Such a concept has long been a favorite theme in Star Trek and in science fiction. An extensive list of popular science books[1] are devoted to topics related to wormholes. We might gauge the popularity of wormholes among students by the recurring references to them in The Simpsons : in one Halloween special[2], Homer was sucked into modern-day...

Analytical wormhole solutions in Brans-Dicke theory in the presence of matter are presented. It is shown that the wormhole throat must not be necessarily threaded with exotic matter. PACS number(s): 04.20Jb, 04.50+h ∗E-mail: [email protected] 1 The field equations of General Relativity, being local in character, admit solutions with nontrivial topology. Among these, wormholes have ...

Wormhole attack is one of the most severe security threats in wireless mesh network that can disrupt majority of routing communications, when strategically placed. At the same time, most of the existing wormhole defence mechanisms are not secure against wormhole attacks that are launched in participation mode. In this paper, we propose WRSR, a wormhole-resistant secure routing algorithm that de...

In ad hoc networks, malicious nodes can carry wormhole attacks to fabricate a false scenario on neighbor relations among mobile nodes. The attacks threaten the safety of ad hoc routing protocols and some security enhancements. We propose a classification of the attacks according to the format of the wormholes. It establishes a basis on which the detection capability of the approaches can be ide...

Suppose, the Universe comes into existence (as classical spacetime) already with an empty spherically symmetric macroscopic wormhole present in it. Classically the wormhole would evolve into a part of the Schwarzschild space and thus would not allow any signal to traverse it. I consider semiclassical corrections to that picture and build a model of an evaporating wormhole. The model is based on...

A new cosmological object in analogy with the concept of a wormhole general relativity is introduced. As wormholes connect two distant points through tunnel spacetime, this connects spacetime large mouth which referred to as “Cosmic Gate”. In context, identical copies regular part de Sitter are cut timelike hyperplane. Then, they glued at their boundaries (the only boundary) form complete space...