Dual polyhedra and mirror symmetry for Calabi-Yau hypersurfaces in toric varieties

Oct, 1993
44 pages
Published in:
  • J.Alg.Geom. 3 (1994) 493-545
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Abstract: (arXiv)
We consider families F(Δ){\cal F}(\Delta) consisting of complex (n1)(n-1)-dimensional projective algebraic compactifications of Δ\Delta-regular affine hypersurfaces ZfZ_f defined by Laurent polynomials ff with a fixed nn-dimensional Newton polyhedron Δ\Delta in nn-dimensional algebraic torus T=(C)n{\bf T} =({\bf C}^*)^n. If the family F(Δ){\cal F}(\Delta) defined by a Newton polyhedron Δ\Delta consists of (n1)(n-1)-dimensional Calabi-Yau varieties, then the dual, or polar, polyhedron Δ\Delta^* in the dual space defines another family F(Δ){\cal F}(\Delta^*) of Calabi-Yau varieties, so that we obtain the remarkable duality between two {\em different families} of Calabi-Yau varieties. It is shown that the properties of this duality coincide with the properties of {\em Mirror Symmetry} discovered by physicists for Calabi-Yau 33-folds. Our method allows to construct many new examples of Calabi-Yau 33-folds and new candidats for their mirrors which were previously unknown for physicists. We conjecture that there exists an isomorphism between two conformal field theories corresponding to Calabi-Yau varieties from two families F(Δ){\cal F}(\Delta) and F(Δ){\cal F}(\Delta^*).
Note:
  • 43 pages, Latex