[PDF] Top 20 Extra s and s in heterotic-string derived models
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Extra s and s in heterotic-string derived models
... the string model is attractive because it admits both the doublet–triplet splitting mechanism [45] as well as the doublet–doublet splitting mechanism ...such string models are not viable because it ... See full document
25
Phenomenological survey of free fermionic heterotic-string models
... the extra internal coordinates. The free fermionic models have also been instrumental in recent years to unravel a new duality symmetry under the exchange of spinor and vector representations of the GUT ... See full document
14
Light U(1)s in heterotic string models
... from string models ...the extra symmetry to provide adequate suppression of the unwanted terms, it has to exist at a mass scale within reach of contemporary particle accelerators [9, ... See full document
124
A light Z ' heterotic-string derived model
... an extra Z ′ inspired from heterotic–string theory at ac- cessible energy scales attracted considerable interest in the particle physics ...of heterotic–string derived ... See full document
18
The Exact MSSM spectrum from string theory
... that heterotic standard models and, in particular, the minimal heterotic standard model described in this paper may be of phenomenological ... See full document
17
Towards machine learning in the classification of Z2xZ2 orbifold compactifications
... generation models with differing SO(10) ...generation models for phenomenological investigations, the classification method provided penetrating insight into the global properties of the space of (2, 0) ... See full document
8
Proton Stability, Gauge Coupling Unification and a Light $Z^\prime$ in Heterotic-string Models
... in string models is the normalisation of the U (1) ...in string theory the non–abelian symmetry is not manifest, and the proper normalisation of the U (1) cur- rents is ...in string ... See full document
20
Classifications of the free fermionic heterotic string vacua
... of models in which all exotic states transform in representations of an hidden non–Abelian gauge group, is noted in table ...of models with equal numbers of 4 and 4 0 ...Free-Fermionic models that ... See full document
125
Counting string theory standard models
... N ( h CICY ) 10 23 , N ¯ ( h max ) 10 721 . (3) Clearly, these numbers are quite dramatic, even if we restrict our- selves to the CICYs. The predicted number of standard models even within this set is significantly ... See full document
6
Classification of SU(4) x SU(2) x U(1) heterotic-string models
... the heterotic–string in four dimensions pro- duced a rich space of phenomenological three generation ...These models admit the underlying SO(10) GUT embedding of the Standard Model ...the ... See full document
16
Spinor-vector duality and light Z' in heterotic string vacua
... bosonic models. In four dimensional models in the light–cone gauge the total num- ber of world–sheet fermions is twenty left–moving and forty–four right–moving real two dimen- sional ...dimensional ... See full document
17
Classification of flipped SU(5) heterotic-string vacua
... fermionic heterotic–string vacua to mod- els in which the SO(10) GUT symmetry at the string scale is broken to the flipped SU (5) ...the string vacua is obtained in terms of the Gen- eralised ... See full document
51
Balanced Metrics and Phenomenological Aspects of Heterotic Compactifications
... supersymmetric models whose spectra contain fields in addition to those of the MSSM with right-handed neutrinos [88, 89, 90, 91, 92, 93, ...these extra fields that induce the potentially observable ... See full document
256
Spinor-vector duality and sterile neutrinos in string derived models
... space. String theory enables exploration of the augmentation of the Standard Model with gravity in a perturbatively consistent ...parameters, string theory severely constrains the allowed extensions, and ... See full document
8
Monad Bundles in Heterotic String Compactifications
... for p = 1, . . . , rk(V ) − 1 for all our examples. A systematic stability proof will be presented in Ref. [46]. We have also shown how to calculate the complete particle spectrum for these models. In particular, ... See full document
36
Calabi-Yau Geometries: Algorithms, Databases, and Physics
... Whereas the archetype of the Renaissance scholar is that of a polymath versed in a multitude of subjects, and that of the Victorian inventor, a solitary figure labouring away in some focused esoterica, it is becoming ... See full document
43
Activity Levels in Mothers and Their Preschool Children
... ’ s weight status, time spent at preschool, duration of mother ’ s schooling, and by time of the day and week, that it is moderated by demographic and tem- poral ... See full document
10
String hypothesis for the AdS 5 x S^5 mirror
... Having found the exact dispersion relation and the S-matrix, the next step is to determine bound states of the model. Analysis reveals that all bound states are those of elementary particles [30], and comprise ... See full document
20
Matter from Toric Geometry and its Search at the LHC
... of string theories, many of which include underlying grand unification symmetries ...of string theory is F-theory [3] which allows string theorists to construct new realistic vacua - in the form of ... See full document
5
Abelian Gauge Symmetries in F-Theory and Dual Theories
... In contrast, if we consider an elliptic curve over a function field, as it arises in elliptic fibrations Z n of E over a base B n−1 used for lower-dimensional heterotic compactifcations, the N points are the zeros ... See full document
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