130 citations · 377 across the 15 of their papers we have counts for
10 papers · 1 filter
Geometric origin of intrinsic rigidity for extremal horizons
Wojciech Kamiński, Adam Szereszewski
Our work clarifies the origin of enhanced symmetry of near horizon geometries. We relate this property to an existence of specific foliation by non-expanding horizons. The existenc…
Symmetry restriction and its application to gravity
Wojciech Kamiński, Klaus Liegener
In the Hamiltonian formulation, it is not a priori clear whether a symmetric configuration will keep its symmetry during evolution. In this paper, we give precise requirements of w…
Dressed metric predictions revisited
Wojciech Kamiński, Maciej Kolanowski, Jerzy Lewandowski
It was recently shown that the volume operator of loop quantum cosmology (LQC) and all its positive powers are ill-defined on physical states. In this paper, we investigate how it…
The Near Horizon Geometry Equation on Compact 2-Manifolds Including the General Solution for g > 0
Denis Dobkowski-Ryłko, Wojciech Kamiński, Jerzy Lewandowski +1
The Near Horizon Geometry (NHG) equation with a cosmological constant Λ is considered on compact 2-dimensional manifolds. It is shown that every solution satisfies the Type D equat…
The Petrov type D equation on genus sections of isolated horizons
Denis Dobkowski-Ryłko, Wojciech Kamiński, Jerzy Lewandowski +1
The Petrov type D equation imposed on the 2-metric tensor and the rotation scalar of a cross-section of an isolated horizon can be used to uniquely distinguish the Kerr - (anti) de…
Relational Evolution of Observables for Hamiltonian-Constrained Systems
Andrea Dapor, Wojciech Kamiński, Jerzy Lewandowski +1
Evolution of systems in which Hamiltonians are generators of gauge transformations is a notion that requires more structure than the canonical theory provides. We identify and stud…
Operator Spin Foam Models
Benjamin Bahr, Frank Hellmann, Wojciech Kamiński +2
The goal of this paper is to introduce a systematic approach to spin foams. We define operator spin foams, that is foams labelled by group representations and operators, as the mai…
The EPRL intertwiners and corrected partition function
Wojciech Kamiński, Marcin Kisielowski, Jerzy Lewandowski
Do the SU(2) intertwiners parametrize the space of the EPRL solutions to the simplicity constraint? What is a complete form of the partition function written in terms of this param…
Spin-Foams for All Loop Quantum Gravity
Wojciech Kamiński, Marcin Kisielowski, Jerzy Lewandowski
The simplicial framework of Engle-Pereira-Rovelli-Livine spin-foam models is generalized to match the diffeomorphism invariant framework of loop quantum gravity. The simplicial spi…
The flat FRW model in LQC: the self-adjointness
Wojciech Kamiński, Jerzy Lewandowski
The flat FRW model coupled to the massless scalar field according to the improved, background scale independent version of Ashtekar, Pawlowski and Singh is considered. The core of…