The Spectra of Type IIB Flux Compactifications at Large Complex Structure

Abstract

We compute the spectra of the Hessian matrix, $\mathcal{H}$, and the matrix $\mathcal{M}$ that governs the critical point equation of the low-energy effective supergravity, as a function of the complex structure and axio-dilaton moduli space in type IIB flux compactifications at large complex structure. We find both spectra analytically in an $h_{-}^{1,2}+3$ real-dimensional subspace of the moduli space, and show that they exhibit a universal structure with highly degenerate eigenvalues, independently of the choice of flux, the details of the compactification geometry, and the number of complex structure moduli. In this subspace, the spectrum of the Hessian matrix contains no tachyons, but there are also no critical points. We show numerically that the spectra of $\mathcal{H}$ and $\mathcal{M}$ remain highly peaked over a large fraction of the sampled moduli space of explicit Calabi-Yau compactifications with 2 to 5 complex structure moduli. In these models, the scale of the supersymmetric contribution to the scalar masses is strongly linearly correlated with the value of the superpotential over almost the entire moduli space, with particularly strong correlations arising for $g_s<1$. We contrast these results with the expectations from the much-used continuous flux approximation, and comment on the applicability of Random Matrix Theory to the statistical modelling of the string theory landscape.

42 pages, 9 figures

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• Flux Compactification
• D7-Brane Chaotic Inflation
• Physics of String Flux Compactifications
• Explicit de Sitter Flux Vacua for Global String Models with Chiral Matter
• Cosmology From Random Multifield Potentials
• Tuning and Backreaction in F-term Axion Monodromy Inflation
• Analytic Classes of Metastable de Sitter Vacua
• Heavy Tails in Calabi-Yau Moduli Spaces
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• Perturbative Stability along the Supersymmetric Directions of the Landscape
• Local random potentials of high differentiability to model the Landscape

Cited by in corpus (10)

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• A New Class of de Sitter Vacua in Type IIB Large Volume Compactifications
• Inflation with a graceful exit in a random landscape
• Universal Properties of Type IIB and F-theory Flux Compactifications at Large Complex Structure
• Towards a complete mass spectrum of type-IIB flux vacua at large complex structure
• Universal Class of Type-IIB Flux Vacua with Analytic Mass Spectrum
• Analytics of type IIB flux vacua and their mass spectra
• Inflation in Random Landscapes with two energy scales
• A new class of de Sitter vacua in String Theory Compactifications