Maurer–Cartan deformation conjecture for ambient symplectic cochains

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Let DD be a Liouville domain whose boundary ∂D\partial D has no contractible Reeb orbits. The intrinsic symplectic cochains SC∗(D)SC^*(D) and the S1S^1-equivariant symplectic cochains SCS1∗(D)SC^*_{S^1}(D) are related by a Gysin map

ρ:SCS1∗(D)→SC∗+1(D),\rho:SC^*_{S^1}(D)\to SC^{*+1}(D),

and ρ∗\rho_* denotes the induced map on Maurer–Cartan moduli spaces. Maurer–Cartan deformation conjecture. There is a Maurer–Cartan element x∈SCS1∗(D)x\in SC^*_{S^1}(D), well-defined up to gauge equivalence, such that

SCM∗(D)≃the twist of SC∗(D) by ρ∗(x).SC^*_M(D)\simeq \text{the twist of }SC^*(D)\text{ by }\rho_*(x).

The conjecture is motivated by an SFT-type neck-stretching argument, which is expected to produce an element in linearized contact chains and then map it to positive equivariant symplectic cochains and ultimately to SCS1∗(D)SC^*_{S^1}(D).

References

Primary source

Yoel Groman, “Boundary Depth and Deformations of Symplectic Cohomology”, arXiv:2510.17607 (2025).

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