Gödel's Universe in a Supertube Shroud

被引：0
|
作者：
Drukker, Nadav [1 ]
Fiol, Bartomeu [1 ]
Simoán, Joan [1 ]
机构：
[1] Department of Particle Physics, Weizmann Institute of Science, 2 Herzl Street, Rehovot 76100, Israel
来源：
Physical Review Letters | 2003年 / 91卷 / 23期
关键词：
Astrophysics - Equations of motion - Kinetic theory - Problem solving - Quantum theory - Relativity;
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摘要：
Godel's universe solutions of supergravity were studied. Backgrounds having closed timelike curves were searched for Bogomol'nyi-Prasad-Sommerfeld (BPS) states, corresponding to extended branes. The dynamics of small fluctuations around the BPS states were also analyzed. The results show that BPS states, when wrapping closed timelike curves, exhibit a sickness in their effective action. This observation suggests that certain supersymmetric Godel-like universe solutions of supergravity are not valid solutions of string theory.
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页码：231601 / 231601
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