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We consider a self-consistent Einstein-Maxwell-Kalb-Ramond system in the bulkD=4 space-time interacting with a variable-tension electrically chargedlightlike brane. The latter serves both as a material and charge source forgravity and electromagnetism, as well as it dynamically generates a bulk spacevarying cosmological constant. We find an asymmetric wormhole solutiondescribing two "universes" with different spherically symmetric black-hole-typegeometries connected through a "throat" occupied by the lightlike brane. Theelectrically neutral "left universe" comprises the exterior region ofSchwarzschild-de-Sitter (or pure Schwarzschild) space-time above the inner(Schwarzschild-type) horizon, whereas the electrically charged "right universe"consists of the exterior Reissner-Nordstroem (or Reissner-Nordstroem-de-Sitter)black hole region beyond the outer Reissner-Nordstroem horizon. All physicalparameters of the wormhole are uniquely determined by two free parameters - theelectric charge and Kalb-Ramond coupling of the lightlike brane.

Asymmetric Wormholes via Electrically Charged Lightlike Branes