标题： 爱因斯坦-麦克斯韦-卡勒布-拉蒙德虫洞的稳定性 显示英文标题

标题： Stability of Einstein-Maxwell-Kalb-Ramond Wormholes

摘要： 本文研究了一种特定类型的虫洞。 所研究的虫洞解是通过在视界处将两个静态、球对称、带电黑洞度规缝合在一起得到的。 带电虫洞位于背景卡布-拉蒙德场中，这是引力场中必要张力的来源。 通过数值求解爱因斯坦方程，研究了度规张量元素，应力-能量张量元素由静态电场和卡布-拉蒙德场的组合给出。 对于一定范围的电荷，张力在虫洞喉部以外是正的，但在喉部附近是负的，使其不可穿越。 发现虫洞在通过引力瞬子隧穿衰变方面是准稳定的。 显示英文摘要

摘要： This paper investigates a particular type of wormhole. The wormhole solutions studied are obtained by sewing together two static, spherically symmetric, 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 non-traversable. The wormholes are found to be quasi-stable against decay via gravitational instanton tunnelling.