(Super)Universal Attractors and the de Sitter Vacua in String Landscape

TL;DR

This paper develops an effective field theory for string inflation that incorporates supersymmetry breaking and universal attractors, providing new insights into de Sitter vacua and extending the string landscape.

Contribution

It introduces a novel uplifting method using nilpotent superfields and reveals universal attractors with a single parameter, expanding understanding of de Sitter vacua in string theory.

Findings

Almost vanishing cosmological constant achieved

Universal attractors unify during inflation

String landscape extended for de Sitter vacua

Abstract

In this work, we present an effective field theory for string inflation with spontaneously broken supersymmetry without generating any supersymmetric anti-de Sitter vacua. In that regard, we analyze the nilpotent superfields that effectively capture the physics of anti-D3 branes, and obtain the underlying pattern of universal attractors with a single parameter. Accordingly, we reveal a novel uplifting method by adding the same parameter as a complex contribution parallel to the decomposition of a superfield. Following that, we obtain an almost vanishing cosmological constant in a region where the inflationary attractors unify. Finally, we show that the introduction of nilpotent superfields drastically extends the string landscape for the de Sitter (swampland) conjecture, and the (super)universal attractors are in the string landscape in that respect.