Four Lectures on Analytic Solutions in Open String Field Theory

Erler, Theodore

doi:10.48550/arxiv.1912.00521

Cited by 10 publications

(13 citation statements)

References 78 publications

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“…In contrast to the field theories from the point-particle limit of superstrings discussed in the previous section, string field theory obtains exact-in-α ′ expressions for superstring amplitudes from Feynman-type rules for the string field. Recent lecture notes on string field theory include [117,118].…”

Section: String Field Theorymentioning

confidence: 99%

Snowmass White Paper: String Perturbation Theory

Berkovits¹,

D’Hoker²,

Green³

et al. 2022

Preprint

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Section: String Field Theorymentioning

confidence: 99%

Snowmass White Paper: String Perturbation Theory

Berkovits¹,

D’Hoker²,

Green³

et al. 2022

Preprint

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show abstract

“…Noticeable progress has been achieved in the past years in the constructions of complete RNS superstring field theories [1][2][3][4][5][6][7], in the understanding of the classical vacuum structure of these theories and in the development of perturbation theory at the quantum level [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45], which also provided a first-principle resolution of several worldsheet drawbacks associated with degenerations of Riemann surfaces and spurious singularities. See [46][47][48] for recent reviews on SFT.…”

Section: Introductionmentioning

confidence: 99%

Closed string deformations in open string field theory I: bosonic string

Maccaferri,

Vošmera

2021

Preprint

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This is the first of a series of three papers on open string field theories based on Witten star product deformed with a gauge invariant open/closed coupling. This deformation is a tree-level tadpole which destabilizes the initial perturbative vacuum. We discuss the existence of vacuum-shift solutions which cancel the tadpole and represent a new configuration where the initial D-brane system has adapted to the change in the closed string background. As an example we consider the bulk deformation which changes the compactification radius and, to first order in the deformation, we reproduce the shift in the mass of the open string KK modes from the new kinetic operator after the vacuum shift. We also discuss the possibility of taming closed string degenerations with the open string propagator in the simplest amplitude corresponding to two closed strings off a disk.

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“…In parallel we have also realized, mainly thanks to the work of Ashoke Sen, that a consistent approach to superstring perturbation theory necessarily needs a SFT formulation [31][32][33][34][35][36][37][38][39][40][41]. See [42] and [43] for recent reviews on the above-mentioned achievements.…”

Section: Introductionmentioning

confidence: 99%

Localization of effective actions in heterotic string field theory

Erbin

Maccaferri

Vošmera

2020

J. High Energ. Phys.

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We consider the algebraic couplings in the tree level effective action of the heterotic string. We show how these couplings can be computed from closed string field theory. When the light fields we are interested in are charged under an underlying N = 2 R-charge in the left-moving sector, their quartic effective potential localizes at the boundary of the worldsheet moduli space, in complete analogy to the previously studied open string case. In particular we are able to compute the quartic closed string field theory potential without resorting to any explicit expression for the 3-and the 4-strings vertices but only using the L ∞ relations between them. As a non trivial example we show how the heterotic Yang-Mills quartic potential arises in this way.1

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Four Lectures on Analytic Solutions in Open String Field Theory

Abstract: The following notes derive from review lectures on the subject of analytic solutions in open string field theory, given at the School for String Field Theory and String Phenomenology at the

Cited by 10 publications

References 78 publications

Snowmass White Paper: String Perturbation Theory

Snowmass White Paper: String Perturbation Theory

Closed string deformations in open string field theory I: bosonic string

Localization of effective actions in heterotic string field theory

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