A stringy test of flux-induced isometry gauging

Kashani-Poor, Amir-Kian; Tomasiello, Alessandro

doi:10.1016/j.nuclphysb.2005.08.040

Cited by 38 publications

(52 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Namely, the fluxes imply a gauging of certain isometries in the 4d effective theory, which must therefore not be violated by the non-perturbative effects. This is a generalization of the analysis in [19], and directly related to the Freed-Witten consistency conditions on brane wrappings in the presence of fluxes. In fact this issue had not appeared in our previous examples with 3-form fluxes because the pullback of the RR 3-form fluxes on the D3-brane 4-cycle vanished, hence satisfying the Freed-Witten consistency conditions (in fact this is generic for 4-cycles and 3-form fluxes on CY compactifications).…”

Section: Jhep01(2009)048mentioning

confidence: 79%

“…A drastic example is that some D-brane instantons of the underlying model are not compatible with the flux, due to Freed-Witten anomalies [18], and are therefore absent in the flux compactification. This effect has been discussed in [19], and we will not focus on it (although it will appear in some of our examples, see section 4.4). A second kind of effect is that fluxes can lift some of the fermion zero modes of D-brane instantons, therefore modifying the kind of 4d effective interaction they produce.…”

Section: Jhep01(2009)048mentioning

confidence: 99%

See 1 more Smart Citation

D-brane instantons and the effective field theory of flux compactifications

Uranga

2009

J. High Energy Phys.

View full text Add to dashboard Cite

We provide a description of the effects of fluxes on euclidean D-brane instantons purely in terms of the 4d effective action. The effect corresponds to the dressing of the effective non-perturbative 4d effective vertex with 4d flux superpotential interactions, generated when the moduli fields made massive by the flux are integrated out. The description in terms of effective field theory allows a unified description of non-perturbative effects in all flux compactifications of a given underlying fluxless model, globally in the moduli space of the latter. It also allows us to describe explicitly the effects on D-brane instantons of fluxes with no microscopic description, like non-geometric fluxes. At the more formal level, the description has interesting connections with the bulk-boundary map of open-closed two-dimensional topological string theory, and with the N = 1 special geometry.

show abstract

Section: Jhep01(2009)048mentioning

confidence: 79%

Section: Jhep01(2009)048mentioning

confidence: 99%

D-brane instantons and the effective field theory of flux compactifications

Uranga

2009

J. High Energy Phys.

View full text Add to dashboard Cite

show abstract

“…the F-term axion monodromy inflation models [41], see also [42,44]), for which our analysis does not apply. 4 Actually, for axions made massive by fluxes, the corresponding instantons are absent due to FreedWitten consistency conditions [83]; but these are precisely the axions which we have assumed have been integrated out in our effective theories. 5 The fractionalization of instantons in an SU(N ) gauge theory is manifest in the F-theory lift, in which the elliptic fibration over N D7-branes pinches off into N component 2-cycles, each of which can be wrapped by an instanton (described as an M5-brane on the 2-cycle of the elliptic fiber fibered over the base 4-cycle).…”

Section: Jhep08(2015)032mentioning

confidence: 99%

Transplanckian axions!?

Montero

Uranga

Valenzuela

2015

J. High Energ. Phys.

180

305

View full text Add to dashboard Cite

We discuss quantum gravitational effects in Einstein theory coupled to periodic axion scalars to analyze the viability of several proposals to achieve superplanckian axion periods (aka decay constants) and their possible application to large field inflation models. The effects we study correspond to the nucleation of euclidean gravitational instantons charged under the axion, and our results are essentially compatible with (but independent of) the Weak Gravity Conjecture, as follows: single axion theories with superplanckian periods contain gravitational instantons inducing sizable higher harmonics in the axion potential, which spoil superplanckian inflaton field range. A similar result holds for multiaxion models with lattice alignment (like the Kim-Nilles-Peloso model). Finally, theories with N axions can still achieve a moderately superplanckian periodicity (by a √ N factor) with no higher harmonics in the axion potential. The Weak Gravity Conjecture fails to hold in this case due to the absence of some instantons, which are forbidden by a discrete Z N gauge symmetry. Finally we discuss the realization of these instantons as euclidean D-branes in string compactifications.

show abstract

“…For this, a sufficient condition is that the instanton is rigid and has no other chiral or vector-like zero modes from E3-D7 intersections. Furthermore, one also needs to ensure that the instantons are free of Freed-Witten anomalies [65].…”

mentioning

confidence: 99%

Moduli stabilisation versus chirality for MSSM like type IIB orientifolds

Blumenhagen¹,

Moster²,

Plauschinn³

2008

J. High Energy Phys.

160

269

View full text Add to dashboard Cite

We investigate the general question of implementing a chiral MSSM like D-brane sector in Type IIB orientifold models with complete moduli stabilisation via F-terms induced by fluxes and space-time instantons, respectively gaugino condensates. The prototype examples are the KKLT and the so-called large volume compactifications. We show that the ansatz of first stabilising all moduli via F-terms and then introducing the Standard Model module is misleading, as a chiral sector notoriously influences the structure of non-perturbative effects and induces a D-term potential. Focusing for concreteness on the large volume scenario, we work out the geometry of the swiss-cheese type Calabi-Yau manifold IP [1,3,3,3,5] [15] (3,75) and analyse whether controllable and phenomenologically acceptable Kähler moduli stabilisation can occur by the combination of F-and D-terms.

show abstract

A stringy test of flux-induced isometry gauging

Cited by 38 publications

References 37 publications

D-brane instantons and the effective field theory of flux compactifications

D-brane instantons and the effective field theory of flux compactifications

Transplanckian axions!?

Moduli stabilisation versus chirality for MSSM like type IIB orientifolds

Contact Info

Product

Resources

About