标题： 目标空间方法处理闭弦快子 显示英文标题

标题： Target Space Approach to Closed String Tachyons

摘要： 我们利用弦理论的低能有效理论来研究传播于整个空间中的闭弦快子凝聚。 c-函数通过有效作用量与系统的总能量相关联。 讨论了c定理的一种可能修正。 我们还通过研究规范超引力的标量势来推导衰变的终点。 平坦时空中的弦理论可能是可能的终点之一。 显示英文摘要

摘要： We use the low energy effective theory of string theory to investigate condensations of closed string tachyons propagating in the bulk. The c-function is related to the total energy of the system via the effective action. A possible modification of the c-theorem is discussed. We also deduce endpoints of the decays by investigating scalar potential of gauged supergravities. A string theory in the flat spacetime would be a possible endpoint.