D-brane spectrum and K-theory constraints of D = 4, Script N = 1 orientifolds
D-brane spectrum and K-theory constraints of D = 4, Script N = 1 orientifolds
复制标题
D 膜谱和 D = 4 的 K 理论约束，脚本 N = 1 orientifolds
DOI：
10.1088/1126-6708/2006/04/052
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发表时间：
2006
影响因子：
5.4
通讯作者：
Maiden J
中科院分区：
文献类型：
--
作者：
Maiden J
We study the spectrum of stable BPS and non-BPS D-branes in Bbb Z 2× Bbb Z 2 orientifolds for all choices of discrete torsion between the orbifold and orientifold generators. We compute the torsion K-theory charges in these D= 4, Script N= 1 orientifold models directly from worldsheet conformal field theory, and compare with the K-theory constraints obtained indirectly using D-brane probes. The K-theory torsion charges derived here provide non-trivial constraints on string model building. We also discuss regions of stability for non-BPS D-branes in these examples.
