Global orientifolded quivers with inflation

Cicoli, Michele; García-Etxebarria, Iñaki; Mayrhofer, Christoph; Quevedo, Fernando; Shukla, Pramod; Valandro, Roberto

doi:10.1007/jhep11(2017)134

Cited by 60 publications

(85 citation statements)

References 62 publications

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“…Explicit global models : A fully working 4D string model, should not lead just to a dS vacuum but it should also include SM‐like chiral matter, an inflationary sector and a concrete embedding in globally consistent Calabi‐Yau compactifications with an explicit choice of the orientifold involution, the brane setup, background and gauge fluxes. A lot of progress in this direction has been made recently within the type IIB framework 10.…”

Section: De Sitter In String Theorymentioning

confidence: 99%

“…Above all, because of the difficulty to solve the minimisation equations in the presence of a large number of complex structure and open string moduli. A lot of progress has been made in this direction (in particular models with an effective small number of complex structure moduli) but a globally consistent model with full moduli stabilisation in a controlled dS vacuum has still to be achieved. However given the existence of a very large number of flux configurations it would be very surprising if there is no solution to these equations. 6.…”

Section: De Sitter In String Theorymentioning

confidence: 99%

“…Hence it does not make that much sense to obtain dS vacua which cannot realise these other crucial phenomenological features. In the past few years there has been substantial progress in building global models with dS, chiral matter and inflation but a fully working model which can allow for both a realistic cosmology and particle physics is still missing. 7. F‐theory moduli stabilisation : Type IIB models are the weak coupling limit of more general F‐theory constructions.…”

Section: De Sitter In String Theorymentioning

confidence: 99%

“…Expanding the T‐brane action in the presence of supersymmetry breaking background fluxes gives rise to a positive definite contribution to the 4D scalar potential which can be used to obtain a dS vacuum . Let us stress that this approach to dS vacua has been used in several explicit global Calabi‐Yau models …”

Section: De Sitter In String Theorymentioning

confidence: 99%

See 3 more Smart Citations

De Sitter vs Quintessence in String Theory

Cicoli

Alwis

Maharana

et al. 2018

Fortschritte der Physik

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223

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De Sitter solutions have been recently conjectured to be incompatible with quantum gravity. In this paper we critically assess the progress and challenges of different mechanisms to obtain de Sitter vacua in string compactifications and compare them to quintessence models. We argue that, despite recent criticisms, de Sitter models reached a level of concreteness and calculational control which has been improving over time. On the other hand, building string models of quintessence appears to be more challenging and requires additional fine‐tuning. We discuss the tension between the swampland conjecture and the Higgs potential and find examples which can evade fifth‐force bounds even if they seem very hard to realise in string theory. We also comment on the tension with low‐redshift data and explore ultra‐light axions from string theory as dark energy candidates.

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Section: De Sitter In String Theorymentioning

confidence: 99%

Section: De Sitter In String Theorymentioning

confidence: 99%

Section: De Sitter In String Theorymentioning

confidence: 99%

Section: De Sitter In String Theorymentioning

confidence: 99%

See 2 more Smart Citations

De Sitter vs Quintessence in String Theory

Cicoli

Alwis

Maharana

et al. 2018

Fortschritte der Physik

190

223

View full text Add to dashboard Cite

show abstract

“…In F-theory, these homomorphisms arise as "T-brane" data for two intersecting stacks of seven-branes probing a C 2 /Z N singularity (for a partial list of references to the T-brane literature, see references [37,39,44,91,107,[112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130][131]). In particular, we can turn on T-brane data for either stack of seven-branes, resulting in a theory labeled by a pair of homomorphisms ρ 1 , ρ 2 ∈ Hom(su(2), g).…”

Section: B U (1)'s From Group Theorymentioning

confidence: 99%

General prescription for globalU(1)’s in 6D SCFTs

et al. 2020

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We present a general prescription for determining the global U (1) symmetries of sixdimensional superconformal field theories (6D SCFTs). We use the quiver-like gauge theory description of the tensor branch to identify candidate U (1) symmetries which can act on generalized matter. The condition that these candidate U (1)'s are free of Adler-Bell-Jackiw (ABJ) anomalies provides bottom-up constraints for U (1)'s. This agrees with the answer obtained from symmetry breaking patterns induced by Higgs branch flows. We provide numerous examples illustrating the details of this proposal. In the F-theory realization of these theories, some of these symmetries originate from deformations of non-abelian flavor symmetries localized on a component of the discriminant, while others come from an additional generator of the Mordell-Weil group. We also provide evidence that some of these global U (1)'s do not arise from gauge symmetries, as would happen in taking a decoupling limit of a model coupled to six-dimensional supergravity.There is a striking interplay between stringy extra-dimensional geometric structures and low energy effective field theories. This is particularly manifest in the context of F-theory compactifications, where intersecting seven-branes are geometrized into elliptically fibered Calabi-Yau spaces [1-3]. A prominent example illustrating the power of such methods is the recent classification of six-dimensional superconformal field theories (6D SCFTs) via Ftheory [4,5] (see also [6,7]). This provides a remarkably flexible approach to constructing 6D SCFTs which encompasses essentially all other methods (see [8][9][10][11][12][13][14][15][16][17][18][19][20][21] for a partial list of older references, references [22][23][24][25][26] for recent holographic examples, and [27] for a review).With these results in place, it is natural to ask what detailed features of 6D SCFTs can be extracted from the associated geometries. One piece of information which is readily available from an F-theory model is the tensor branch of the 6D SCFT moduli space, as this is encoded directly in terms of Kähler deformations of the base of an F-theory model. Additionally, some global symmetries correlate with the appearance of non-compact sevenbranes intersecting the localized region inhabited by a 6D SCFT. This, in tandem with field theoretic techniques, has made it possible to tightly constrain the structure of anomalies in 6D SCFTs [28][29][30][31][32][33].Even so, there are a number of outstanding open issues connected with determining the structure of global symmetries in a 6D SCFT. In what follows we exclusively focus on the case of continuous zero-form symmetries. While in many cases there is a close match between the flavor symmetries expected from geometric and field theoretic methods, there are notable examples where either the F-theory model only captures a subset of possible flavor symmetries, and conversely, where a "naïve" field theoretic analysis might at first suggest a bigger flavor symmetry than what can actually be...

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On the Search for Low W₀

Broeckel

Cicoli

Maharana

et al. 2022

Fortschritte der Physik

Self Cite

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The magnitude of the vacuum expectation value of the Gukov‐Vafa‐Witten superpotential |W0|$|W_0|$ plays a central role in the phenomenology of type IIB flux compactifications. Recent analytical constructions have shown that perturbatively flat vacua can be used to obtain very low values of |W0|$|W_0|$. We present systematic algorithms to carry out exhaustive numerical searches for such vacua. We also analyse them in the statistical context, as part of the entire ensemble of type IIB flux vacua at low |W0|$|W_0|$. Our preliminary analysis indicates that these perturbatively flat vacua are statistically sparse in the whole set of vacua at low |W0|$|W_0|$ as calculated by Denef and Douglas. Two‐moduli examples are used to illustrate these more general findings in specific settings. We find that these simple (two moduli) cases are good examples for existence proofs but they do not feature a large statistical tuning freedom for phenomenological applications.

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Global orientifolded quivers with inflation

Cited by 60 publications

References 62 publications

De Sitter vs Quintessence in String Theory

De Sitter vs Quintessence in String Theory

General prescription for globalU(1)’s in 6D SCFTs

On the Search for Low W₀

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Global orientifolded quivers with inflation

Cited by 60 publications

References 62 publications

De Sitter vs Quintessence in String Theory

De Sitter vs Quintessence in String Theory

General prescription for globalU(1)’s in 6D SCFTs

On the Search for Low W0

Contact Info

Product

Resources

About

On the Search for Low W₀