Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1992-10-12
Phys.Rev.Lett.70:3688-3691,1993
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, HD-THEP-92-29
Scientific paper
10.1103/PhysRevLett.70.3688
A new framework is found for the compactification of supersymmetric string theory. It is shown that the massless spectra of Calabi--Yau manifolds of complex dimension $D_{crit}$ can be derived from noncritical manifolds of complex dimension $2k + D_{crit}$, $k\geq 1$. These higher dimensional manifolds are spaces whose nonzero Ricci curvature is quantized in a particular way. This class is more general than that of Calabi--Yau manifolds because it contains spaces which correspond to critical string vacua with no K\"ahler deformations, i.e. no antigenerations, thus providing mirrors of rigid Calabi--Yau manifolds. The constructions introduced here lead to new insights into the relation between exactly solvable models and their mean field theories on the one hand and Calabi--Yau manifolds on the other. They also raise fundamental questions about the Kaluza--Klein concept of string compactification, in particular regarding the r\^{o}le played by the dimension of the internal theories.
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