Extra time-like dimensions lead to a vanishing cosmological constant
Extra time-like dimensions lead to a vanishing cosmological constant
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DOI：
10.1016/0370-2693(86)90767-7
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发表时间：
1986-09
影响因子：
4.4
通讯作者：
I. Aref’eva;B. Dragovic;I. Volovich
中科院分区：
文献类型：
--
作者：
I. Aref’eva;B. Dragovic;I. Volovich
允许额外的类时维，宇宙常数问题在卡鲁扎-克莱因理论的审查。在宇宙常数为零的情况下，得到了D=11超引力的一类新的真空解。特别地，在有效四维理论的低能极限中，存在一个具有SO（4）×U（1）规范群且没有鬼粒子和快子的解。
Allowing extra time-like dimensions, the cosmological constant problem in Kaluza-Klein theories is examined. A new class of vacuum solutions is obtained for D=11 supergravity with a vanishing cosmological constant. In particular, there exists a solution with an SO(4)×U(1) gauge group, and without ghosts and tachyons in the low-energy limit of the effective four-dimensional theory.