148 citations · 1.2k across the 28 of their papers we have counts for
28 papers
Finiteness of spinfoam vertex amplitude with timelike polyhedra, and the full amplitude
Muxin Han, Wojciech Kaminski, Hongguang Liu
This work focuses on Conrady-Hnybida's 4-dimensional extended spinfoam model with timelike polyhedra, while we restrict all faces to be spacelike. Firstly, we prove the absolute co…
The volume operator in loop quantum cosmology
Wojciech Kaminski
We show that for basically all states, the evolution of the expectation value of the volume operator in Wheeler-DeWitt and various homogenous isotropic loop quantum comology (LQC)…
The hessian in spin foam models
Wojciech Kaminski, Hanno Sahlmann
We fill one of the remaining gaps in the asymptotic analysis of the vertex amplitudes of the Engle-Pereira-Rovelli-Livine (EPRL) spin foam models: We show that the hessian is nonde…
Asymptotic analysis of the EPRL model with timelike tetrahedra
Wojciech Kaminski, Marcin Kisielowski, Hanno Sahlmann
We perform the stationary phase analysis of the vertex amplitude for the EPRL spin foam model extended to include timelike tetrahedra. We analyse both, tetrahedra of signature $---…
SL(2,C) Chern-Simons Theory, Flat Connections, and Four-dimensional Quantum Geometry
Hal M. Haggard, Muxin Han, Wojciech Kaminski +1
A correspondence between three-dimensional flat connections and constant curvature four-dimensional simplices is used to give a novel quantization of geometry via complex SL(2,C) C…
Addendum: Observables for General Relativity related to geometry
Paweł Duch, Wojciech Kamiński, Jerzy Lewandowski +1
In this addendum we clarify a point which strengthens one of the results from [the original paper]. Namely, we show that the algebra of the observables is yet simpler then…