Standard model from a supergravity model with a naturally small cosmological constant

  title={Standard model from a supergravity model with a naturally small cosmological constant},
  author={Shing Yan Li and Yueyin Qiu and S. H. H. Tye},
  journal={Journal of High Energy Physics},
Guided by the naturalness criterion for an exponentially small cosmological constant, we present a string theory motivated 4-dimensional N\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{N} $$\end{document} = 1 non-linear supergravity model (or its linear version with a nilpotent superfield) with… 

A novel solution to the gravitino problem

  • Y. QiuS. Tye
  • Materials Science
    Journal of High Energy Physics
  • 2023
In a general phenomenological model with local supersymmetry, the amount of massive gravitinos produced in early universe tends to violate the known dark matter density bound by many orders of

Axi-Higgs cosmology

If the electroweak Higgs vacuum expectation value v in early universe is ∼ 1 % higher than its present value v0=246 GeV, the 7Li puzzle in BBN and the CMB/ΛCDM tension with late-universe measurements

Higgs in Nilpotent Supergravity: Vacuum Energy and Festina Lente

In this note we study supergravity models with constrained superfields. We construct a supergravity framework in which all (super)symmetry breaking dynamics happen in vacuum with naturally (or

Yoga Dark Energy: natural relaxation and other dark implications of a supersymmetric gravity sector

We construct a class of 4D 'yoga' (naturally relaxed) models for which the gravitational response of heavy-particle vacuum energies is strongly suppressed. The models contain three ingredients: (i) a

Who's Afraid of the Supersymmetric Dark? The Standard Model vs Low‐Energy Supergravity

Use of supergravity equations in astronomy and late‐universe cosmology is often criticized on three grounds: (i) phenomenological success usually depends on the supergravity form for the scalar

J C A P 0 8 ( 2 0 2 1 ) 0 5 7 ournal of C osmology and A stroparticle P hysics

  • 2021

Unimodular vs nilpotent superfield approach to pure dS supergravity

Recent progress in understanding de Sitter spacetime in supergravity and string theory has led to the development of a four dimensional supergravity with spontaneously broken supersymmetry allowing



Non-supersymmetric string models from anti-D3-/D7-branes in strongly warped throats

This article discusses model-building scenarios including anti-D3-/D7-branes, in which supersymmetry is broken spontaneously, despite having no scale at which sparticles appear and standard

Linking the supersymmetric standard model to the cosmological constant

This work considers a model that links the supersymmetric electroweak phenomenology (bottom up) to the string theory motivated flux compactification approach (top down), and finds that an exponentially small Λ is statistically preferred and has a SUSY-breaking scale that directly correlates with the Higgs fields in the visible sector is mEW.

The supersymmetric anti-D3-brane action in KKLT

An anti-D3-brane plays a crucial role in the construction of semi-realistic cosmological models in string theory. Part of its action provides an uplift term that has been used to lift AdS solutions

Supersymmetry and Supergravity

The first edition of this book appeared in 1983 and was based on a series of lectures given at Princeton in 1983 by Julius Wess. Since the appearance of the first edition much work has been done on

Linearizing the Volkov-Akulov model

The nonlinear realization of supersymmetry of Volkov and Akulov is related to a constrained linear realization in two and four dimensions.