科研之友
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摘要
This paper investigates a particular type of wormhole. The wormhole solutions studied are obtained by sewing together two static, spherically symmeric, charged black-hole metrics at their horizons. The charged wormholes are in a background Kalb-Ramond field, which is the source of the necessary tension in the gravitational field. The metric-tensor elements are studied by numerically solving Einstein's equations with stress-energy-tensor elements given by the combination of static electric and Kalb-Ramond fields. For a certain range of electric charge the tension is positive away from the wormhole throat, but the tension is negative near the throat, making it nontraversable. The wormholes are found to be quasistable against decay via gravitational instanton tunneling.
- 出版日期2016-2-4
