Open AccessJournal Article10.1002/PROP.201200047

Unoriented D-brane instantons

- 29 Feb 2012

TL;DR: In this paper, the authors give a pedagogical introduction to D-brane instanton effects in vacuum configurations with open and unoriented strings, focusing on quiver gauge theories for unoriented Dbranes at orbifold singularities.

Abstract: We give a pedagogical introduction to D-brane instanton effects in vacuum configurations with open and unoriented strings. We focus on quiver gauge theories for unoriented D-branes at orbifold singularities and describe in some detail the Z_3 case, where both `gauge' and `exotic' instantons can generate non-perturbative super potentials, and the Z_5 case, where supersymmetry breaking may arise from the combined effect of `gauge' instantons and a FI D-term.

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The authors focus on quiver gauge theories for unoriented D-branes at orbifold singularities and describe in some detail the Z3 case, where both ‘ gauge ’ and ‘ exotic ’ instantons can generate nonperturbative super potentials, and the Z5 case, where supersymmetry breaking may arise from the combined effect of ‘ gauge ’ instantons and a FI D-term.

Table 1 Chiral matter field content. Indices i = 1, 2, u = 1, ..5 run over the fundamentals of the SU(2) flavor and SU(5) gauge groups.

Fig. 1 The quiver diagrams for (a) C3/Z3 and (b) C3/Z5. The dashed lines represent the unoriented projection.

Citations

•Journal Article•10.1007/JHEP06(2014)180

Topological duality twist and brane instantons in F-theory

Luca Martucci

- 11 Mar 2014

- Journal of High Energy Physics

TL;DR: In this paper, a variant of the topological twist, involving SL(2, ℤ) dualities and hence named topological duality twist, is introduced and explicitly applied to describe a U(1) N = 4 super Yang-Mills theory on a Kahler space with holomorphically space-dependent coupling.

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•Journal Article•10.1007/JHEP10(2016)036

Exploring soft constraints on effective actions

Massimo Bianchi, +4 more

- 27 May 2016

- Journal of High Energy Physics

TL;DR: In this paper, the authors studied the effect of the mixing of Goldstone modes under the broken symmetries, which, in contrast to the usual Adler zero, leads to non-vanishing soft limits.

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•Journal Article•10.1007/JHEP10(2016)036

Exploring soft constraints on effective actions

Massimo Bianchi, +4 more

- 27 May 2016

- arXiv: High Energy Physics - Theory

TL;DR: In this paper, effective actions for simultaneous breaking of space-time and internal symmetries are studied in the Coulomb branch of a general CFT, and it is shown that all amplitudes up to order Ω(n) are completely determined in terms of the $k$-point amplitudes at order n with n ≤ √ n.

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•Journal Article•10.1007/JHEP06(2014)180

Topological duality twist and brane instantons in F-theory

Luca Martucci

- 11 Mar 2014

- arXiv: High Energy Physics - Theory

TL;DR: In this article, a variant of the topological twist, involving SL(2,Z) dualities and hence named topological duality twist, is introduced and explicitly applied to describe a U(1) N=4 super Yang-Mills theory on a Kaehler space with holomorphically space-dependent coupling.

...read moreread less

•Journal Article•10.1007/JHEP01(2014)128

Unoriented Quivers with Flavour

Massimo Bianchi, +3 more

- 01 Jul 2013

- arXiv: High Energy Physics - Theory

TL;DR: In this paper, a wide class of unoriented quiver gauge theories, including new instances of N=1 superconformal theories, are discussed, and it is shown that conformal symmetry can be dynamically broken via the generation of exotic superpotentials.

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References

•Journal Article•10.1016/0550-3213(95)00158-O

String theory dynamics in various dimensions

Edward Witten

- 05 Jun 1995

- Nuclear Physics

TL;DR: The strong coupling dynamics of string theories in dimension d ⩾ 4 are studied in this paper, where it is argued that eleven-dimensional supergravity arises as a low energy limit of the ten-dimensional Type IIA superstring.

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•Journal Article•10.1016/0550-3213(95)00158-O

String Theory Dynamics In Various Dimensions

Edward Witten

- 20 Mar 1995

- arXiv: High Energy Physics - Theory

TL;DR: The strong coupling dynamics of string theories in dimension $d\geq 4$ are studied in this paper, where it is argued that eleven-dimensional supergravity arises as a low energy limit of the ten-dimensional Type IIA superstring.

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•Journal Article•10.1016/0550-3213(95)00610-9

Bound states of strings and p-branes

Edward Witten

- 05 Feb 1996

- Nuclear Physics

TL;DR: In this paper, it was shown that the Type IIB superstring in ten dimensions has a family of soliton and bound state strings permuted by SL(2, Z ) and the space-time coordinates enter tantalizingly in the formalism as noncommuting matrices.

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•Journal Article•10.1016/0550-3213(95)00610-9

Bound States Of Strings And $p$-Branes

Edward Witten

- 18 Oct 1995

- arXiv: High Energy Physics - Theory

TL;DR: The recent discovery of an explicit conformal field theory description of Type II $p$-branes makes it possible to investigate the existence of bound states of such objects as mentioned in this paper.

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•Journal Article•10.1016/J.PHYSREP.2007.04.003

Four-dimensional string compactifications with D-branes, orientifolds and fluxes

Ralph Blumenhagen, +5 more

- 01 Jul 2007

- Physics Reports

TL;DR: In this paper, a review article provides a pedagogical introduction to various classes of chiral string compactifications to four dimensions with D-branes and fluxes with the main concern being to provide all necessary technical tools to explicitly construct four-dimensional orientifold vacua, with the final aim to come as close as possible to the supersymmetric standard model.

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Unoriented D-brane instantons

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Citations

Topological duality twist and brane instantons in F-theory

Exploring soft constraints on effective actions

Exploring soft constraints on effective actions

Topological duality twist and brane instantons in F-theory

Unoriented Quivers with Flavour

References

String theory dynamics in various dimensions

String Theory Dynamics In Various Dimensions

Bound states of strings and p-branes

Bound States Of Strings And $p$-Branes

Four-dimensional string compactifications with D-branes, orientifolds and fluxes

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