期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2021)168
关键词
Superstring Vacua; D-branes; Flux compactifications
资金
- ANR grant BlackdS-String [ANR-16-CE31-0004-01]
- ERC [772408, 787320]
- John Templeton Foundation [61149]
- Simons Foundation Origins of the Universe Initiative (modern inflationary cosmology collaboration)
- Simons Investigator award
- Swedish Research Council [2015-05333]
In the analysis of stable four-dimensional de Sitter vacua constructed by compactifying massive Type IIA supergravity with two O8 sources, the first source is interpreted as an O8(-) plane in String Theory, while the second source could correspond to either an O8(+) plane or an O8(-) plane with 16 D8-branes. The latter solution exhibits a tachyonic instability, where the D8-branes move away from the O8(-) plane. Possible ways of distinguishing between these sources are discussed.
We analyze the stability of four-dimensional de Sitter vacua constructed by compactifying massive Type IIA supergravity in the presence of two O8 sources [1]. When embedded in String Theory the first source has a clear interpretation as an O8(-) plane, but the second one could correspond to either an O8(+) plane or to an O8(-) plane with 16 D8-branes on top. We find that this latter solution has a tachyonic instability, corresponding to the D8 branes moving away from the O8(-) plane. We comment on the possible ways of distinguishing between these sources.
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