Strings from tachyons:: the c=1 matrix reloaded -: art. no. 054

被引:176
|
作者
McGreevy, J [1 ]
Verlinde, H [1 ]
机构
[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
来源
关键词
matrix models; tachyon condensation; D-branes;
D O I
10.1088/1126-6708/2003/12/054
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We propose a new interpretation of the c = 1 matrix model as the world-line theory of N unstable D-particles, in which the hermitian matrix is provided by the non-abelian open string tachyon. For D-branes in 1+1-d string theory, we find a direct quantitative match between the closed string emission due to a rolling tachyon and that due to a rolling eigenvalue in the matrix model. We explain the origin of the double-scaling limit, and interpret it as an extreme representative of a large equivalence class of dual theories. Finally, we define a concrete decoupling limit of unstable D-particles in IIB string theory that reduces to the c = 1 matrix model, suggesting that 1+1-d string theory represents the near-horizon limit of an ultra-dense gas of IIB D-particles.
引用
收藏
页数:28
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