Chiral asymmetry in four-dimensional open string vacua

Angelantonj, C.; Bianchi, M.; Pradisi, G.; Sagnotti, A.; Stanev, Ya.S.

doi:10.1016/0370-2693(96)00869-6

Chiral asymmetry in four-dimensional open string vacua

C. Angelantonj
(
- L'Aquila U. and
- Gran Sasso
)
,
M. Bianchi
(
- Rome U., Tor Vergata and
- INFN, Rome
)
,
G. Pradisi
(
- Rome U., Tor Vergata and
- INFN, Rome
)
,
A. Sagnotti
(
- Rome U., Tor Vergata and
- INFN, Rome
)
,
Ya.S. Stanev
(
- Rome U., Tor Vergata and
- INFN, Rome
)

Jun, 1996

13 pages

Published in:

Phys.Lett.B 385 (1996) 96-102

e-Print:

hep-th/9606169 [hep-th]

DOI:

10.1016/0370-2693(96)00869-6

Report number:

ROM2F-96-34

View in:

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Abstract:

Starting from the type IIB string on the Z orbifold, we construct some chiral open-string vacua with N=1 supersymmetry in four dimensions. The Chan-Paton group depends on the (quantized) NS-NS antisymmetric tensor. The largest choice, SO(8)xSU(12)xU(1), has an anomalous U(1) factor whose gauge boson acquires a mass of the order of the string scale. The corresponding open-string spectrum comprises only N strings and includes three families of chiral multiplets in the (8,12*) + (1,66) representation. A comparison is drawn with a heterotic vacuum with non-standard embedding, and some properties of the low-energy effective field theory are discussed.

Note:

12 pages, LaTeX Report-no: ROM2F-96-34

string model
supersymmetry
string: open
orbifold
symmetry: chiral
symmetry breaking
group theory: representation
effective action

References(39)

Figures(0)

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