Geometric flux formula for the gravitational Wilson loop
Classical and Quantum Gravity, ISSN: 1361-6382, Vol: 38, Issue: 7
2021
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Article Description
Finding diffeomorphism-invariant observables to characterize the properties of gravity and spacetime at the Planck scale is essential for making progress in quantum gravity. The holonomy and Wilson loop of the Levi-Civita connection are potentially interesting ingredients in the construction of quantum curvature observables. Motivated by recent developments in nonperturbative quantum gravity, we establish new relations in three and four dimensions between the holonomy of a finite loop and certain curvature integrals over the surface spanned by the loop. They are much simpler than a gravitational version of the nonabelian Stokes' theorem, but require the presence of totally geodesic surfaces in the manifold, which follows from the existence of suitable Killing vectors. We show that the relations are invariant under smooth surface deformations, due to the presence of a conserved geometric flux.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85094217517&origin=inward; http://dx.doi.org/10.1088/1361-6382/abb874; https://iopscience.iop.org/article/10.1088/1361-6382/abb874; https://dx.doi.org/10.1088/1361-6382/abb874; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=83f75a2b-94be-44b8-b8e6-746e1dc78f75&ssb=00399204598&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1088%2F1361-6382%2Fabb874&ssi=2f72083b-cnvj-4831-96ea-62044120e8b9&ssk=botmanager_support@radware.com&ssm=16124758591423777123616777158039812&ssn=81ca381276a64fc0b06fe6e15de072aa314a3460dc2c-6ee3-420f-b06821&sso=7f3221ed-b2e6616f70ebb722c6ef0a1fad0e785106916b25fb7dc75c&ssp=17075723611725305033172564716159579&ssq=60799786641761826561718888043010990456667&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDA1ZGE5MzUzMS1kNzliLTQ1MWEtYWMwNi00OTFhYzQxOWZjNGYxNzI1MzE4ODg4NTM3MzQ3NTI5MTgzLTM5NmU0ODBlMjRkYzg5ZjIxMjM2MSIsInV6bXgiOiI3ZjkwMDAwYzMzYzZiYi1mMzAyLTQ4NmQtODgzNi01OTAyYThhYWVhZGU1LTE3MjUzMTg4ODg1MzczNDc1MjkxODMtNTQ0NWIyMjBmZmE5OTEzMjEyMzYxIn0=
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