BPS spectrum on AdS$_3\times $S$^3 \times $S$^3 \times $S$^1$
BPS spectrum on AdS$_3\times $S$^3 \times $S$^3 \times $S$^1$
复制标题
AdS$_3 上的 BPS 频谱 imes $S$^3 imes $S$^3 imes $S$^1$
DOI:
10.1007/jhep03(2017)124
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Wei Li
中科院分区:
文献类型:
--
作者:
Lorenz Eberhardt;M. Gaberdiel;R. Gopakumar;Wei Li
The BPS spectrum of string theory on AdS$_3\times {\rm S}^3 \times {\rm S}^3 \times {\rm S}^1$ is determined using a world-sheet description in terms of WZW models. It is found that the theory only has BPS states with $j^+ = j^-$ where $j^{\pm}$ refer to the spins of the $\mathfrak{su}(2)$ algebras of the large ${\cal N}=4$ superconformal algebra. We then re-examine the BPS spectrum of the corresponding supergravity and find that, in contradistinction to previous claims in the literature, also in supergravity only the states with $j^+=j^-$ are BPS. This resolves a number of long-standing puzzles regarding the BPS spectrum of string theory and supergravity in this background.
影响因子:
5.4
作者:
Baggio M
通讯作者:
Baggio M