The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Spacetime instanton corrections in 4D string vacua: The seesaw mechanism for D-brane models
Open accessAbstract
Abstract We systematically investigate instanton corrections from wrapped Euclidean D-branes to the matter field superpotential of various classes of N = 1 supersymmetric D-brane models in four dimensions. Both gauge invariance and the counting of fermionic zero modes provide strong constraints on the allowed non-perturbative superpotential couplings. We outline how the complete instanton computation boils down to the computation of open string disc diagrams for boundary changing operators multiplied by a one-loop vacuum diagram. For concreteness we focus on E2-instanton effects in type IIA vacua with intersecting D6-branes, however the same structure emerges for type IIB and heterotic vacua. The instantons wrapping rigid cycles can potentially destabilise the vacuum or generate perturbatively absent matter couplings such as proton decay operators, μ-parameter or right-handed neutrino Majorana mass terms. The latter allow the realisation of the seesaw mechanism for MSSM like intersecting D-brane models.
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Citations
Cites
Some properties of O(32) superstrings
Witten, E. (1984) · Physics Letters B · doi:10.1016/0370-2693(84)90422-2 · Cited by 1,021 · cited 1×
“2 Heterotic models The Type I setup sketched in the previous section is S-dual to the Spin(32)/Z2 heterotic string [40], more concretely to a specific embedding of products of U(N) gauge bundles into Spin(32)/Z2 [41,42].”
Background
Cited by
Four-dimensional string compactifications with D-branes, orientifolds and fluxes
Blumenhagen, R., Körs, B., Lüst, D., & Stieberger, S. (2007) · Physics Reports · doi:10.1016/j.physrep.2007.04.003 · Cited by 890
Self-citationBoyarsky, A., Drewes, M., Lasserre, T., Mertens, S., & Ruchayskiy, O. (2019) · Progress in Particle and Nuclear Physics · doi:10.1016/j.ppnp.2018.07.004 · Cited by 393
d-Brane Instantons in Type II Orientifolds
Blumenhagen, R., Cvetič, M., Kachru, S., & Weigand, T. (2009) · Annual Review of Nuclear and Particle Science · doi:10.1146/annurev.nucl.010909.083113 · Cited by 257
Self-citationMontero, M., Uranga, A. M., & Valenzuela, I. (2015) · Journal of High Energy Physics · doi:10.1007/jhep08(2015)032 · Cited by 200
Neukart, F. (2025) · Entropy · doi:10.3390/e27020103 · Cited by 4
“Non-perturbative effects like string instantons can also generate CP-violating interactions [17].”
Metadata
- Authors
- Blumenhagen, R., Cvetič, M., & Weigand, T.
- Venue
- Nuclear Physics B
- Publisher
- Elsevier BV
- Published
- 2007-05
- Volume
- 771
- Issue
- 1-2
- Pages
- 113-142
- ISSN
- 0550-3213 (ISSN-L)
- OpenAlex
- W2063733105
- Cited by
- 383
- References
- 1
- FWCI
- 38.73
- Type
- journal article
- Language
- en
- Open access
- green
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- Blumenhagen, R., Cvetič, M., & Weigand, T. (2007). Spacetime instanton corrections in 4D string vacua: The seesaw mechanism for D-brane models. Nuclear Physics B. https://doi.org/10.1016/j.nuclphysb.2007.02.016
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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