ScalingStacks

2.2 Further motivations [0042]

Original official author HTML, exact retained edition. Historical TeX conversion verdicts remain unchanged. Cited-edition alignment and mathematical self-containment are not assessed.

Complete original source context · Original author HTML

2.2 Further motivations

Aside from its importance in mirror symmetry, the SYZ conjecture is interesting for other diverse fields such as minimal surface theory, Riemannian geometry, Kähler and algebraic geometry.

  • •

    Special Lagrangians are minimal submanifolds, and in fact calibrated submanifolds. Currently, there are few methods for producing special Lagrangians in sufficiently large supply of Calabi-Yau manifolds, although there is a series of conjectures initiated by Thomas-Yau [75][74] and further developed in [43][57].

  • •

    The behaviour of a family of Einstein metrics depends strongly on whether the volume of geodesic balls satisfies the noncollapsing condition for some uniform constant κ>0\kappa>0.

    Volg​(Bg​(r))≥κ​rdimℝX,∀0<r≤diam​(X).\text{Vol}_{g}(B_{g}(r))\geq\kappa r^{\dim_{\mathbb{R}}X},\quad\forall 0<r\leq\text{diam}(X).

    A good convergence and regularity theory is available in the non-collapsing case [13]. On the other hand, metric degeneration in the collapsing case is largely terra incognita in Riemannian geometry, and the semiflat metric asymptote is a highly nontrivial emergent feature for a collapsing family of Calabi-Yau metrics.

  • •

    A recurring theme of Kähler geometry is the interplay between metric and complex geometry. Käher-Einstein metrics in the non-collapsing case is tied to projective geometry [23]. The large complex structure limit is a very severe kind of polarized degeneration, whose transcendental behaviour (related to exponential and logarithms) is not adequately captured by traditional projective geometry, and instead non-archimedean geometry stands out as a natural framework. One can then ask about the relation between Calabi-Yau metrics and non-archimedean geometry, a problem that turns out to be related to the SYZ conjecture.

Original mathematics by the credited authors. Source-backed reader collection; mathematical self-containment is not assessed.