Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking

By Joseph P. Conlon, F. Quevedo, K. Suruliz. 2005

601 citations recorded by the source corpus.

We present an explicit calculation of the spectrum of a general class of string models, corresponding to Calabi-Yau flux compactifications with h1,2 > h1,1 > 1 with leading perturbative and non-perturbative corrections, in which all geometric moduli are stabilised as in [14]. The volume is exponentially large, leading to a range of string scales from the Planck mass to the TeV scale, realising for the first time the large extra dimensions scenario in string theory. We provide a general analysis of the relevance of perturbative and non-perturbative effects and the regime of validity of the effective field theory. We compute the spectrum in the moduli sector finding a hierarchy of masses depending on inverse powers of the volume. We also compute soft supersymmetry breaking terms for particles living on D3 and D7 branes. We find a hierarchy of soft terms corresponding to `volume dominated' F-term supersymmetry breaking. F-terms for Kahler moduli dominate both those for dilaton and complex structure moduli and D-terms or other de Sitter lifting terms. This is the first class of string models in which soft supersymmetry breaking terms are computed after fixing all geometric moduli. We outline several possible applications of our results, both for cosmology and phenomenology and point out the differences with the less generic KKLT vacua.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/daed524423aa39e6a4c112b8c58c393b3c3c1c3e

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Citations in the corpus

SUSY breaking in local string/F-theory models (2009, neutral): “J H E P 0 9 ( 2 0 0 9 ) 0 0 7 As a generalisation of this, including also next-to-leading order corrections to the Kähler potential, the volume of the compactification manifold V can be stabilised at exponentially large values [2, 3].”
MODELS OF PARTICLE PHYSICS FROM TYPE IIB STRING THEORY AND F-THEORY: A REVIEW (2012, background): “jThe distinction arises as separation in the extra dimensions controls the strength of coupling between the visible sector and the source of supersymmetry breaking, see for example [53].”
The weak gravity conjecture and scalar fields (2017, neutral): “(see for example [41] for an analysis).”
Les Houches Lectures on Constructing String Vacua (2008, background): “But once these conditions are met, th existence of large volume minima of the effective potential in this scena rio is guaranteed by the general analysis of [5, 89, 105, 106].”
On Inflation in String Theory (2003, background): “New ideas of particle phenomenology in the context of supergravity and moduli stabilization were developed in [45, 46, 47, 48, 49, 3, 50, 51, 52], leading to a set of new predictions for the spectrum of particles to be detected in the future.”
Phenomenology of a pseudo-scalar inflaton: naturally large nongaussianity (2011, background): “Possibly, interesting models from the perspective of obtaining strong inverse decay effects, are based on the large volume compactification of [66, 67, 68].”
Fitting the Phenomenological MSSM (2009, background): “Mirage mediation [112] with predominantly bino LSP and the large volume scenario (LVS [113, 114, 115, 116]) have a characteristic ratio less than 6 and between 3 to 4, respectively (with the LVS having the most compact gaugino mass pattern).”
D-brane Deconstructions in IIB Orientifolds (2008, background): “• Slow roll inflation can be accommodated, at least in fine tuned local models [10, 11, 12, 13].”
GUTs in Type IIB Orientifold Compactifications (2008, background): “the D7-brane cycles are fixed by the D-term constraints instead of the F-terms, the resulting soft-terms and low-energy signatures are expected to be different from the ones computed so far in the literature for the LARGE volume scenario [8, 78, 9, 10].”
Towards universal axion inflation and reheating in string theory (2014, methodology): “Using mKK 2πMsV− 6 (see [28]), one obtains for the Kaluza–Klein scale mKK ∼ 1017 GeV, which is of the same order as the string scale.”
Soft SUSY breaking terms for chiral matter in IIB string compactifications (2006, background): “One class of models in which this occurs naturally are the large-volume models of [11, 12].”
Inflation and String Theory (2014, methodology): “29 For the α ′ and string loop expansions to be valid, we require V ξ̂ 1, as discussed further below; see [366] for a systematic exposition of the α ′ expansion in this setting.”