TITLE: 1d TQFT minus connection =?
QUESTION [7 upvotes]: Correct me if I am wrong but I believe at least conceptually (maybe even rigorously) data of a 1-dimensional TQFT and of a vector bundle with connection are equivalent.
Going into more detail (and consequently making more and more mistakes), a vector bundle with connection allows to assign to a point the fibre over that point, and to a path the monodromy (or holonomy? Yes I am that ignorant) along this path.
Three questions, but closely related:
Does there exist equally layman-ish description of going back from a TQFT to a vector bundle?
Clearly this requires the base to be at least a smooth manifold. Is there known any TQFT-like object (and maybe also connection-like object) that would work in the non-smooth context? Say, for topological manifolds, or even arbitrary finite CW-complexes?
What if one leaves manifolds alone but removes the connection? Is there known a version of TQFT that would work for vector bundles with arbitrarily severe restrictions (say, very-very nice algebraic vector bundles on very-very good algebraic varieties) but without any additional structure?
Two remarks:
Sort of minimal version of the question is whether a vector bundle $p:E\to[0,1]$ comes with any kind of map (relation? correspondence?) between $p^{-1}(0)$ and $p^{-1}(1)$. Vague association with motives comes to mind but that's all my mind offers.
Obviously I am tempted to ask the same about 2D-TQFT. But I am (almost) successfully resisting this temptation.

REPLY [4 votes]: Going into more detail (and consequently making more and more mistakes), a vector bundle with connection allows to assign to a point the fibre over that point, and to a path the monodromy (or holonomy? Yes I am that ignorant) along this path.

Yes, this is pretty much correct.
You can indeed assign holonomy to paths.
Furthermore, there is an equivalence between 1-dimensional smooth TFTs
over X and vector bundles with connections over X.
Precise definitions with proofs can be found in the paper
https://arxiv.org/abs/1501.00967.

Does there exist equally layman-ish description of going back from a TQFT to a vector bundle?

Yes.
The underlying vector bundle without a connection can be recovered
by evaluating the smooth TFTs at the smooth family of points given by the manifold itself.
The connection is recovered by differentiating the parallel transport map.

Clearly this requires the base to be at least a smooth manifold. Is there known any TQFT-like object (and maybe also connection-like object) that would work in the non-smooth context? Say, for topological manifolds, or even arbitrary finite CW-complexes?

Yes.  Replace the site of smooth manifolds with the site of topological manifolds
or the site of finite CW-complexes.

What if one leaves manifolds alone but removes the connection? Is there known a version of TQFT that would work for vector bundles with arbitrarily severe restrictions (say, very-very nice algebraic vector bundles on very-very good algebraic varieties) but without any additional structure?

Yes, this is the (∞,1)-version of 1-dimensional TFTs.
(“Holonomy” is now not a strict functor, but an (∞,1)-functor,
which no longer produces a connection.)
See, for example, the survey by Lurie
and the more recent work by Chris Schommer-Pries.