Continuum-limit conjecture for discretized higher gauge connections

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.

Sources & referencesView supporting material

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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