The Neutrino Suppression Scale from Large Volumes

Abstract

We present an argument in which the scale ~ 0.1 eV associated with neutrino masses naturally appears in a a class of (very) large volume compactifications, being tied to a supersymmetry scale of 10^3 GeV and a string scale of 10^11 GeV. The masses are of Majorana type and there is no right-handed neutrino within the low-energy field theory. The suppression scale 10^14 GeV is independent of the masses of the heavy states that are integrated out. These kind of constructions appear naturally in Type IIB flux compactifications. However, the arguments that lead to this result rely only on a few geometrical features of the compactification manifold, and hence can be used independently of string theory.

4 pages, RevTeX; v2. matches journal version

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• Reheating for Closed String Inflation
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• Continuous Global Symmetries and Hyperweak Interactions in String Compactifications
• Sparticle Spectra and LHC Signatures for Large Volume String Compactifications
• F-theory and Neutrinos: Kaluza-Klein Dilution of Flavor Hierarchy
• Massive wavefunctions, proton decay and FCNCs in local F-theory GUTs
• The Weinberg Operator and a Lower String Scale in Orientifold Compactifications
• Towards a Systematic Construction of Realistic D-brane Models on a del Pezzo Singularity
• Putting the Boot into the Swampland
• Global Fits of the Large Volume String Scenario to WMAP5 and Other Indirect Constraints Using Markov Chain Monte Carlo
• Neutrino Masses from the Top Down
• On 'Light' Fermions and Proton Stability in 'Big Divisor' D3/D7 Swiss Cheese Phenomenology
• Towards Large Volume Big Divisor D3-D7 "mu-Split Supersymmetry" and Ricci-Flat Swiss-Cheese Metrics, and Dimension-Six Neutrino Mass Operators
• Neutrino mass from M Theory SO(10)
• FCNC Processes from D-brane Instantons
• Local D3/D7 mu-Split SUSY, 125 GeV Higgs and Large Volume Ricci-Flat Swiss-Cheese Metrics: A Brief Review
• Neutrino mass matrices from localization in M-theory on $G_2$ orbifold
• Aspects of moduli stabilization in type IIB string theory