Continuum-limit conjecture for discretized higher gauge connections

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Let MM be a manifold and let D{\cal D} range over all discretizations of MM. Denote by Conn⁡/ ⁣/Gauge⁡(M,G)\boldsymbol{\operatorname{Conn}} /\!/ \boldsymbol{\operatorname{Gauge}}(M,\mathcal{G}) the continuum double groupoid of connections and gauge transformations, and by Conn⁡/ ⁣/Gauge⁡(M,D,G)\boldsymbol{\operatorname{Conn}} /\!/ \boldsymbol{\operatorname{Gauge}}(M,\mathcal{D},\mathcal{G}) the corresponding double groupoid for the discretization D{\cal D}. Continuum-limit conjecture. The continuum double groupoid is the inductive limit

Conn⁡/ ⁣/Gauge⁡(M,G)\boldsymbol{\operatorname{Conn}} /\!/ \boldsymbol{\operatorname{Gauge}}(M,\mathcal{G})

of the discretized double groupoids

Conn⁡/ ⁣/Gauge⁡(M,D,G)\boldsymbol{\operatorname{Conn}} /\!/ \boldsymbol{\operatorname{Gauge}}(M,\mathcal{D},\mathcal{G})

over all discretizations D{\cal D} of MM. This proposes a way to recover the continuum theory from increasingly fine discretizations, ordered by refinement, although the relevant analytic and categorical foundations are not supplied here.

References

Primary source

Jeffrey C. Morton and Roger Picken, “2-Group Actions and Moduli Spaces of Higher Gauge Theory”, arXiv:1904.10865 (2019).

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