How a four-dimensional de Sitter solution remains outside the swampland

Author:

Dasgupta Keshav,Emelin Maxim,Faruk Mir Mehedi,Tatar Radu

Abstract

Abstract We argue that, in the presence of time-dependent fluxes and quantum corrections, four-dimensional de Sitter solutions should appear in the type IIB string landscape and not in the swampland. Our construction considers generic choices of local and non-local quantum terms and satisfies the no-go and the swampland criteria, the latter being recently upgraded using the trans-Planckian cosmic censorship. Interestingly, both time-independent Newton constant and moduli stabilization may be achieved in such backgrounds even in the presence of time-dependent fluxes and internal spaces. However, once the time-dependence is switched off, any four-dimensional solution with de Sitter isometries appears to have no simple effective field theory descriptions and is back in the swampland.

Publisher

Springer Science and Business Media LLC

Subject

Nuclear and High Energy Physics

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