We construct a static axisymmetric wormhole from the gravitational field of two Schwarzschild particles which are kept in equilibrium by strings (ropes) extending to infinity. The wormhole is obtained by matching two three-dimensional timelike surfaces surrounding each of the particles and thus spacetime becomes non-simply connected. Although the matching will not be exact in general it is poss...

In this paper, the backreaction to the traversable Lorentzian wormhole spacetime by the scalar field or electric charge is considered to find the exact solutions. The charges play the role of the additional matter to the static wormhole which is already constructed by the exotic matter. The stability conditions for the wormhole with scalar field and electric charge are found from the positivene...

In order to offer low communication latency and reduced buffer requirements, wormhole routing has been used in almost all new generation parallel computers. It has been a powerful switching technique where its communication latency is distance insensitive. On the other hand, deadlock avoidance is the most critical issue in wormhole networks. If deadlock handling is not considered, wormhole rout...

Multicast is an important collective communication operation on multicomputer systems, in which the same message is delivered from a source node to an arbitrary number of destination nodes. The star graph interconnection network has been recognized as an attractive alternative to the popular hypercube network. In this paper, we address an efficient and deadlock-free tree-based multicast routing...

This paper presents an efficient routing and flow control mechanism to implement multidestination message passing in wormhole networks.It is targeted to situations where the size of message data is very small, like in invalidation and update messages in distributed shared-memory multiprocessors (DSMs) with hardware cache coherence. The mechanism is a variation of tree-based multicast with pruni...