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Global type IIA vacuum: A unified model for the standard model and cosmology

Yang Liu*

  • *Contact author: liu-yang_1990@mail.tsinghua.edu.cn
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Phys. Rev. D 113, 066009 – Published 16 March, 2026

DOI: https://doi.org/10.1103/ngxw-sqtm

Abstract

We propose a unified framework within type IIA string theory, based on a globally consistent intersecting D6-brane model compactified on a T6/(Z2×Z2) orientifold. The model realizes the Minimal Supersymmetric Standard Model-like spectrum providing a framework for addressing four fundamental problems: CP violation originates from both geometric phases in Yukawa couplings and nonperturbative phases induced by E2-instantons; the observed baryon asymmetry arises via instanton-mediated operators combined with moduli-driven leptogenesis; the electroweak hierarchy is stabilized through controlled supersymmetry breaking with a TeV-scale gravitino mass near a metastable vacuum; and a de Sitter uplift is achieved via anti-D6-branes in an STU moduli stabilization scheme. Crucially, the interplay of intersecting brane geometry, Euclidean D2-instantons, and flux-induced moduli potentials provides a coherent mechanism linking collider, flavor, and cosmological phenomena.

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Phys. Rev. D 113, 066009– Published 16 March, 2026
  • Received 13 January 2026
  • Accepted 19 February 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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