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

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.

From Minkowski to de Sitter vacua with various geometries

“…In two recent papers [12,13], a systematic derivation of dS/AdS vacua is presented in the context of the no-scale SUGRA without invoking any external mechanism of vacuum uplifting such as through the addition of anti-D3 brane contributions [23,24] or extra Fayet-Iliopoulos terms [25][26][27][28][29]. Namely, these vacua are achieved by combining two distinct Minkowski vacua taking as initial point the Kähler potential parameterizing the non-compact SU (1, 1)/U (1) Kähler manifold in half-plane coordinates, T and T * .…”