Combinatorial 2d higher topological quantum field theory from a local cyclic $A_\infty$ algebra

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Main Authors: Beck, Justin, Losev, Andrey, Mnev, Pavel
Format: Preprint
Published: 2024
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author Beck, Justin
Losev, Andrey
Mnev, Pavel
author_facet Beck, Justin
Losev, Andrey
Mnev, Pavel
contents We construct combinatorial analogs of 2d higher topological quantum field theories. We consider triangulations as vertices of a certain CW complex $Ξ$. In the "flip theory," cells of $Ξ_\mathrm{flip}$ correspond to polygonal decompositions obtained by erasing the edges in a triangulation. These theories assign to a cobordism $Σ$ a cochain $Z$ on $Ξ_\mathrm{flip}$ constructed as a contraction of structure tensors of a cyclic $A_\infty$ algebra $V$ assigned to polygons. The cyclic $A_\infty$ equations imply the closedness equation $(δ+Q)Z=0$. In this context we define combinatorial BV operators and give examples with coefficients in $\mathbb{Z}_2$. In the "secondary polytope theory," $Ξ_\mathrm{sp}$ is the secondary polytope (due to Gelfand-Kapranov-Zelevinsky) and the cyclic $A_\infty$ algebra has to be replaced by an appropriate refinement that we call an $\widehat{A}_\infty$ algebra. We conjecture the existence of a good Pachner CW complex $Ξ$ for any cobordism, whose local combinatorics is descibed by secondary polytopes and the homotopy type is that of Zwiebach's moduli space of complex structures. Depending on this conjecture, one has an "ideal model" of combinatorial 2d HTQFT determined by a local $\widehat{A}_\infty$ algebra.
format Preprint
id arxiv_https___arxiv_org_abs_2402_04468
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Combinatorial 2d higher topological quantum field theory from a local cyclic $A_\infty$ algebra
Beck, Justin
Losev, Andrey
Mnev, Pavel
Mathematical Physics
High Energy Physics - Theory
Algebraic Topology
Geometric Topology
We construct combinatorial analogs of 2d higher topological quantum field theories. We consider triangulations as vertices of a certain CW complex $Ξ$. In the "flip theory," cells of $Ξ_\mathrm{flip}$ correspond to polygonal decompositions obtained by erasing the edges in a triangulation. These theories assign to a cobordism $Σ$ a cochain $Z$ on $Ξ_\mathrm{flip}$ constructed as a contraction of structure tensors of a cyclic $A_\infty$ algebra $V$ assigned to polygons. The cyclic $A_\infty$ equations imply the closedness equation $(δ+Q)Z=0$. In this context we define combinatorial BV operators and give examples with coefficients in $\mathbb{Z}_2$. In the "secondary polytope theory," $Ξ_\mathrm{sp}$ is the secondary polytope (due to Gelfand-Kapranov-Zelevinsky) and the cyclic $A_\infty$ algebra has to be replaced by an appropriate refinement that we call an $\widehat{A}_\infty$ algebra. We conjecture the existence of a good Pachner CW complex $Ξ$ for any cobordism, whose local combinatorics is descibed by secondary polytopes and the homotopy type is that of Zwiebach's moduli space of complex structures. Depending on this conjecture, one has an "ideal model" of combinatorial 2d HTQFT determined by a local $\widehat{A}_\infty$ algebra.
title Combinatorial 2d higher topological quantum field theory from a local cyclic $A_\infty$ algebra
topic Mathematical Physics
High Energy Physics - Theory
Algebraic Topology
Geometric Topology
url https://arxiv.org/abs/2402.04468