TY - JOUR
T1 - Instability of tachyon supertube in type IIA Gödel spacetime
AU - Huang, Wung Hong
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/6/2
Y1 - 2005/6/2
N2 - We study the tachyon supertube probes in a type IIA supergravity background which is a stringy-like Gödel spacetime and contains closed timelike curve. In the case of small value of f, which is a parameter of the background, we use the Minahan-Zwiebach tachyon action to obtain a single regular tube solution and argue that the tube is a BPS D2-brane. However, we find that the fluctuation around the tube configuration has a negative-energy mode. This means that the tachyon supertube, despite being a BPS configuration, develops an instability in the pathological spacetime with closed timelike curve which violates the causality.
AB - We study the tachyon supertube probes in a type IIA supergravity background which is a stringy-like Gödel spacetime and contains closed timelike curve. In the case of small value of f, which is a parameter of the background, we use the Minahan-Zwiebach tachyon action to obtain a single regular tube solution and argue that the tube is a BPS D2-brane. However, we find that the fluctuation around the tube configuration has a negative-energy mode. This means that the tachyon supertube, despite being a BPS configuration, develops an instability in the pathological spacetime with closed timelike curve which violates the causality.
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U2 - 10.1016/j.physletb.2005.04.031
DO - 10.1016/j.physletb.2005.04.031
M3 - Article
AN - SCOPUS:19344377956
SN - 0370-2693
VL - 615
SP - 266
EP - 272
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -