13 papers
Path integral renormalisation in loop quantum cosmology
Norbert Bodendorfer, Muxin Han, Fabian Haneder +1
A coarse graining technique akin to block spin transformations that groups together fiducial cells in a homogeneous and isotropic universe has been recently developed in the contex…
A note on coarse graining and group representations
Norbert Bodendorfer, Fabian Haneder
A coarse graining operation of spatially homogeneous quantum states based on an SU(1,1) Lie group structure has recently been proposed in [1] and used in [2] to compute an explicit…
Partial Deconfinement at Strong Coupling on the Lattice
Hiromasa Watanabe, Georg Bergner, Norbert Bodendorfer +5
We provide evidence for partial deconfinement -- the deconfinement of a SU() subgroup of the SU() gauge group -- by using lattice Monte Carlo simulations. We take matrix mode…
Mass and Horizon Dirac Observables in Effective Models of Quantum Black-to-White Hole Transition
Norbert Bodendorfer, Fabio M. Mele, Johannes Münch
In the past years, black holes and the fate of their singularity have been heavily studied within loop quantum gravity. Effective spacetime descriptions incorporating quantum geome…
Thermal phase transition in Yang-Mills matrix model
Georg Bergner, Norbert Bodendorfer, Masanori Hanada +3
We study the bosonic matrix model obtained as the high-temperature limit of two-dimensional maximally supersymmetric SU() Yang-Mills theory. So far, no consensus about the order…
Renormalisation with SU(1, 1) coherent states on the LQC Hilbert space
Norbert Bodendorfer, Dennis Wuhrer
We present an analytic computation of an explicit renormalisation group flow for cosmological states in loop quantum gravity. A key ingredient in our analysis are Perelomov coheren…