On the anomalous U(1) in free fermionic superstring models
Cleaver, G.B.
Faraggi, A.E.
United States. Department of Energy. Office of Energy Research.
Florida Univ., Gainesville, FL (United States). Inst. for Fundamental Theory
1997-11-01
English
The realistic free fermionic models have had an intriguing success in explaining different properties of the observed particle spectrum. In this paper the authors discuss in some detail the anomalous U(1) symmetry which exists in these models. They study the properties of the anomalous U(1) in both the more realistic NAHE-based free fermionic models and those in a general NAHE class. Appearance of an anomalous U(1) in the more realistic NAHE models is shown to be an effect of reduction of world-sheet supersymmetry from (2,2) to (2,0). They show, however, that in more general (2,1) and (2,0) models, all U(1) can remain anomaly-free under certain conditions. Several phenomenological issues related to the anomalous U(1) are discussed. In particular, they note that in some examples the anomalous U(1) arises from the breaking E{sub 6} {yields} SO(10) {times} U(1){sub A}, resulting in U(1){sub A} being family universal.
Grand Unified Theory
Unitary Symmetry
Gauge Invariance
U-1 Groups
Fermions
66 Physics
Superstring Models
Supersymmetry
Other Information: PBD: Nov 1997
Report
23 p.
Text
other: DE98001990
rep-no: DOE/ER/40272--288
rep-no: UFIFT-HEP--97-28;UPR--0773-T;HEP-TH--9711339
grantno: FG05-86ER40272
doi: 10.2172/564309
osti: 564309
https://digital.library.unt.edu/ark:/67531/metadc699280/
ark: ark:/67531/metadc699280