English

Symplectic embeddings of 4-dimensional ellipsoids into polydiscs

Symplectic Geometry 2016-11-23 v1

Abstract

McDuff and Schlenk have recently determined exactly when a four-dimensional symplectic ellipsoid symplectically embeds into a symplectic ball. Similarly, Frenkel and M\"uller have recently determined exactly when a symplectic ellipsoid symplectically embeds into a symplectic cube. Symplectic embeddings of more complicated structures, however, remain mostly unexplored. We study when a symplectic ellipsoid E(a,b)E(a,b) symplectically embeds into a polydisc P(c,d)P(c,d). We prove that there exists a constant CC depending only on d/cd/c (here, dd is assumed greater than cc) such that if b/ab/a is greater than CC, then the only obstruction to symplectically embedding E(a,b)E(a,b) into P(c,d)P(c,d) is the volume obstruction. We also conjecture exactly when an ellipsoid embeds into a scaling of P(1,b)P(1,b) for bb greater than or equal to 66, and conjecture about the set of (a,b)(a,b) such that the only obstruction to embedding E(1,a)E(1,a) into a scaling of P(1,b)P(1,b) is the classical volume. Finally, we verify our conjecture for b=132b = \frac{13}{2}.

Keywords

Cite

@article{arxiv.1409.2385,
  title  = {Symplectic embeddings of 4-dimensional ellipsoids into polydiscs},
  author = {Max Timmons and Priera Panescu and Madeleine Burkhart},
  journal= {arXiv preprint arXiv:1409.2385},
  year   = {2016}
}

Comments

31 pages, 2 figures