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QFTs which are pure constraint

  1. Aug 20, 2012 #1


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    I'm interested in (typically topological) QFTs arising from Lagrangians which are pure constraint, ie. of the form

    f(ψ) λ,

    where λ is a Lagrange multiplier field not appearing in f(ψ). Perturbatively, the partition function merely counts the solutions of f(ψ)=0. What about nonperturbatively? I imagine there might be situations where exponentially suppressed tunneling phenomena affect the partition function. I am imagining something like the kinks for the particle on a space with a Morse potential. How can I figure out if this is the case?

    What about boundary conditions for these theories?

    Has anyone considered these?

  2. jcsd
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