Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1991-12-06
Nucl.Phys. B376 (1992) 297-349
Physics
High Energy Physics
High Energy Physics - Theory
(Paper is between 70-80 pages, depending on fonts used. A macro is enclosed for printing in a two-page landscape format to hal
Scientific paper
10.1016/0550-3213(92)90127-W
Fractional superstrings are recently-proposed generalizations of the traditional superstrings and heterotic strings. They have critical spacetime dimensions which are less than ten, and in this paper we investigate model-building for the heterotic versions of these new theories. We concentrate on the cases with critical spacetime dimensions four and six, and find that a correspondence can be drawn between the new fractional superstring models and a special subset of the traditional heterotic string models. This allows us to generate the partition functions of the new models, and demonstrate that their number is indeed relatively limited. It also appears that these strings have uniquely natural compactifications to lower dimensions. In particular, the fractional superstring with critical dimension six has a natural interpretation in four-dimensional spacetime.
Dienes Keith R.
Henry Tye S.-H.
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