Light stringy states

Abstract

We carefully study the spectrum of open strings localized at the intersections of D6-branes and identify the lowest massive 'twisted' states and their vertex operators, paying particular attention to the signs of the intersection angles. We argue that the masses of the lightest states scale as M^2 ~ θM^2_s and can thus be parametrically smaller than the string scale. Relying on previous analyses, we compute scattering amplitudes of massless 'twisted' open strings and study their factorization, confirming the presence of the light massive states as sub-dominant poles in one of the channels.

27 pages, 1 figure (v2 Minor corrections, references added)

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Cited by in corpus (13)

• Stringy origin of 4d black hole microstates
• Green functions and twist correlators for $N$ branes at angles
• Correlators of arbitrary untwisted operators and excited twist operators for N branes at angles
• Three- and Four-point correlators of excited bosonic twist fields
• Non-supersymmetric branes
• Canonical quantization of a string describing $N$ branes at angles
• ${\mathbb{Z}}_2$ boundary twist fields and the moduli space of D-branes
• Perturbative higher-derivative terms in N=6 asymmetric orbifolds
• Yukawa's of light stringy states
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• Deformations, Moduli Stabilisation and Gauge Couplings at One-Loop
• Production of light stringy states
• The Classical Solution for the Bosonic String in the Presence of Three D-branes Rotated by Arbitrary SO(4) Elements