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Symplectic field theory: an overview

Richard Hind, Kyler Siegel

Abstract

We summarize some of the main ideas and results around symplectic field theory, from its early inception up to recent and ongoing developments.

Symplectic field theory: an overview

Abstract

We summarize some of the main ideas and results around symplectic field theory, from its early inception up to recent and ongoing developments.

Paper Structure

This paper contains 26 sections, 2 theorems, 16 equations, 4 figures.

Key Result

Theorem 6.1

Let $M$ be a smooth complex projective variety of complex dimension $n \geq 3$ which is uniruled, equipped with its Kähler symplectic form. Let $L \subset M$ be a closed embedded Lagrangian submanifold. Then $L$ does not admit any Riemannian metric with negative sectional curvature.

Figures (4)

  • Figure 3.1: An asymptotically cylindrical pseudoholomorphic pair of pants and a stable pseudoholomorphic building to which it could a priori degenerate under the SFT compactness theorem.
  • Figure 5.1: Two possible breakings of a cylinder in a symplectization into a two level building. The latter breaking prevents the naive differential which counts cylinders from squaring to zero, and this motivates the definition of the contact homology algebra.
  • Figure 5.2: A schematic picture of the curves involved in the contact homology algebra, rational symplectic field theory, and full symplectic field theory.
  • Figure 5.3: A schematic picture of the anchored curves involved after linearized the invariants of the contact manifold $Y$ induced by its Liouville filling $X$. Note that the invariants $C_{{\operatorname{CH}}_{{\operatorname{lin}}}}(X)$ and $C_{\mathcal{B}{{\operatorname{CH}}_{{\operatorname{lin}}}}}(X)$ have no natural unlinearized counterparts, whereas the remaining three invariants only differ by their unlinearized versions by a change of coordinates.

Theorems & Definitions (15)

  • Remark 3.1
  • Remark 3.2
  • Remark 3.3
  • Example 4.1
  • Remark 5.2
  • Remark 5.3
  • Remark 5.4
  • Theorem 6.1: viterbo1994properties
  • proof : Proof of Theorem \ref{['thm:hyp']}
  • Theorem 6.2: CM2
  • ...and 5 more