RT Journal Article
T1 Coarse graining of spin net models: dynamics of intertwiners
A1 Dittrich, Bianca
A1 Martín Benito, Mercedes
A1 Schnetter, Erik
AB Spin foams are models of quantum gravity and therefore quantum space time. A key open issue is to determine the possible continuum phases of these models. Progress on this issue has been prohibited by the complexity of the full four-dimensional models. We consider here simplified analogue models, so called spin nets, that retain the main dynamical ingredient of spin foams, the simplicity constraints. For a certain class of these spin net models we determine the phase diagram and therefore the continuum phases via a coarse graining procedure based on tensor network renormalization. This procedure will also reveal an unexpected fixed point, which turns out to define a new triangulation invariant vertex model. © IOP Publishing and Deutsche Physikalische Gesellschaft.
PB IOP Publishing
YR 2013
FD 2013-10-07
LK https://hdl.handle.net/20.500.14352/98920
UL https://hdl.handle.net/20.500.14352/98920
LA eng
NO Government of Canada
NO Ministry of Research, Innovation and Science (Canada)
NO Ministerio de Innovación y Ciencia (España)
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 15 sept 2024