Applying the Fröhlich-Morchio-Strocchi mechanism to canonical quantum gravity shows that ordinary particles emerge as the leading-order part of diffeomorphism-invariant, gravitationally dressed operators when gravitational fluctuations are small.
Minimizing gauge-functional for 2-d gravity and string theory
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abstract
We show the existence of a minimizing procedure for selecting a unique representative on the orbit of any given Riemann surface that contributes to the string partition function. As it must, the procedure reduces the string path integral to a final integration over a particular fundamental domain, selected by the choice of the minimizing functional. This construction somehow demystifies the Gribov question.
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The Fr\"ohlich-Morchio-Strocchi mechanism and quantum gravity
Applying the Fröhlich-Morchio-Strocchi mechanism to canonical quantum gravity shows that ordinary particles emerge as the leading-order part of diffeomorphism-invariant, gravitationally dressed operators when gravitational fluctuations are small.