Type IIB orientifolds with NS-NS antisymmetric tensor backgrounds

Kakushadze, Zura; Shiu, Gary; Tye, S.‐H. Henry

doi:10.1103/physrevd.58.086001

Cited by 92 publications

(272 citation statements)

References 26 publications

Supporting

Mentioning

261

Contrasting

Order By: Relevance

“…These have been computed for the Z 6 orientifold in [4,6] for the case without Fixed point Twisted Tadpole Condition…”

Section: Tadpole Cancellation Conditionsmentioning

confidence: 99%

“…We shall focus on the study of Wilson lines for Z 6 orientifold, constructed [4,6] by orientifolding type IIB string theory on T 6 /Z 6 . The Z 6 symmetry is generated by an action θ:…”

Section: Wilson Lines In the Z 6 Orientifoldmentioning

confidence: 99%

“…In the Z 6 orientifold model constructed in [4,6] Consider D7 3 branes at p = 0. Since p = 0 is a C 3 /Z 6 orientifold point, the action of θ twist takes the form of Eqn.…”

Section: A Systematic Construction Of Modelsmentioning

confidence: 99%

“…Four-dimensional N=1 supersymmetric Type IIB orientifolds ( [1][2][3][4][5][6][7][8][9] and references therein) provide a fertile ground to study new physics implications of perturbative openstring theories which in turn could shed light on the physics of strongly coupled heterotic string models. In this effort one is at fairly early stages.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Discrete Wilson lines in type IIB orientifolds: a systematic exploration for orientifold

2001

View full text Add to dashboard Cite

We develop techniques to construct general discrete Wilson lines in fourdimensional N=1 Type IIB orientifolds, their T-dual realization corresponds to branes positioned at the orbifold fixed points. The explicit order two and three Wilson lines along with their tadpole consistency conditions are given for D=4 N=1 Z 6 Type IIB orientifold. The systematic search for all models with general order three Wilson lines leads to a small class of inequivalent models.There are only two inequivalent classes of a potentially phenomenologically interesting model that has a possible SU (3) color ×SU (2) L ×SU (2) R ×U (1) B−L gauge structure, arising from a set of branes located at the Z 6 orbifold fixed point. We calculate the spectrum and Yukawa couplings for this model. On the other hand, introduction of anti-branes allows for models with three families and realistic gauge group assignment, arising from branes located at the Z 3 orbifold fixed points.

show abstract

“…These have been computed for the Z 6 orientifold in [4,6] for the case without Fixed point Twisted Tadpole Condition…”

Section: Tadpole Cancellation Conditionsmentioning

confidence: 99%

“…We shall focus on the study of Wilson lines for Z 6 orientifold, constructed [4,6] by orientifolding type IIB string theory on T 6 /Z 6 . The Z 6 symmetry is generated by an action θ:…”

Section: Wilson Lines In the Z 6 Orientifoldmentioning

confidence: 99%

“…In the Z 6 orientifold model constructed in [4,6] Consider D7 3 branes at p = 0. Since p = 0 is a C 3 /Z 6 orientifold point, the action of θ twist takes the form of Eqn.…”

Section: A Systematic Construction Of Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Discrete Wilson lines in type IIB orientifolds: a systematic exploration for orientifold

2001

View full text Add to dashboard Cite

show abstract

“…Various models, basically variations of the Standard Model or it's left-right symmetric extensions, have been constructed [7,8], using these methods. Although some of these models are characterised as semi-realistic, from the phenomenological point of view, the structure of Type I string vacua is very rich to permit a complete classification.…”

Section: Introductionmentioning

confidence: 99%

A Pati–Salam model from branes

Leontaris

Rizos

2001

Physics Letters B

View full text Add to dashboard Cite

We explore the possibility of embedding the Pati-Salam model in the context of Type I brane models. We study a generic model with U(4) C × U(2) L × U(2) R gauge symmetry and matter fields compatible with a Type I brane configuration. Examining the anomaly cancellation conditions of the surplus abelian symmetries we find an alternative hypercharge embedding that is compatible with a low string/brane scale of the order of 5 −7 TeV, when the U(4) C and U(2) R brane stack couplings are equal. Proton stability is assured as baryon number is associated to a global symmetry remnant of the broken abelian factors. It is also shown that this scenario can accommodate an extra low energy abelian symmetry that can be associated to lepton number. The issue of fermion and especially neutrino masses is also discussed.

show abstract

Open Strings in Magnetic Background Fields

Körs

2001

Fortschr. Phys.

View full text Add to dashboard Cite

We discuss various aspects of internal magnetic background fields in open string theories. Phenomenologically and conceptually interesting properties of such string theory backgrounds, supersymmetry and gauge symmetry breaking, chiral fermion spectra and noncommutativity of the internal compactification manifolds, are treated in a rather generic framework. We then specialize to type I compactifications on tori and toroidal orbifolds with magnetic fields on the internal space. This allows to develop a strategy for constructing type I vacua with attractive low energy field theories which may either be supersymmetric or not and contain chiral spectra and gauge groups close to the Standard Model or some grand unified generalization thereof. The most sophisticated version uses magnetic fields and NSNS B‐fields on orbifold spaces giving rise to a plethora of promising examples for semi‐realistic string compactifications. We finally also present a related class of asymmetric orbifolds of type I which are of little phenomenological interest but still display certain interesting features. The asymmetric rotations which are gauged in these models identify D‐branes with different values for the magnetic field on their world volume, such that the distinction of commutative and noncommutative internal geometries is lost.

show abstract

Type IIB orientifolds with NS-NS antisymmetric tensor backgrounds

Cited by 92 publications

References 26 publications

Discrete Wilson lines in type IIB orientifolds: a systematic exploration for orientifold

Discrete Wilson lines in type IIB orientifolds: a systematic exploration for orientifold

A Pati–Salam model from branes

Open Strings in Magnetic Background Fields

Contact Info

Product

Resources

About