6533b835fe1ef96bd12a0135
RESEARCH PRODUCT
Oh, wait, O8 de Sitter may be unstable!
Iosif BenaG. Bruno De LucaMariana GrañaGabriele Lo MonacoGabriele Lo Monacosubject
High Energy Physics - Theoryvacuum state: de SitterNuclear and High Energy PhysicsSettore FIS/02 - Fisica Teorica Modelli E Metodi Matematicidimension: 4compactificationSuperstring VacuaFOS: Physical sciencesD-braneString theory01 natural sciencessupergravity: Type IIADe Sitter universeFlux compactifications0103 physical sciencesC++ string handlingBrane cosmologylcsh:Nuclear and particle physics. Atomic energy. RadioactivityD-brane010306 general physicsMathematical physicsPhysicsCompactification (physics)010308 nuclear & particles physicsPlane (geometry)[PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th]Supergravitytachyon: stabilitySuperstring Vacua D-branes Flux compactificationsHigh Energy Physics - Theory (hep-th)D-branesstringlcsh:QC770-798description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-03-01 |