120 citations · 607 across the 31 of their papers we have counts for
6 papers · 1 filter
Hamiltonian Renormalisation II. Renormalisation Flow of 1+1 dimensional free scalar fields: Derivation
Thorsten Lang, Klaus Liegener, Thomas Thiemann
In the companion paper we motivated a renormalisation flow on Osterwalder-Schrader data (OS-data) consisting of 1. a Hilbert space, 2. a cyclic vacuum and 3. a Hamiltonian annihila…
Hamiltonian Renormalisation IV. Renormalisation Flow of D+1 dimensional free scalar fields and Rotation Invariance
Thorsten Lang, Klaus Liegener, Thomas Thiemann
In this article we extend the test of Hamiltonian Renormalisation proposed in this series of articles to the D-dimensional case using a massive free scalar field. The concepts we i…
Hamiltonian Renormalization III. Renormalisation Flow of 1+1 dimensional free scalar fields: Properties
Thorsten Lang, Klaus Liegener, Thomas Thiemann
This is the third paper in a series of four in which a renormalisation flow is introduced which acts directly on the Osterwalder-Schrader data (OS data) without recourse to a path…
Hamiltonian Renormalisation I: Derivation from Osterwalder-Schrader Reconstruction
Thorsten Lang, Klaus Liegener, Thomas Thiemann
A possible avenue towards a non-perturbative Quantum Field Theory (QFT) on Minkowski space is the constructive approach which employs the Euclidian path integral formulation, in th…
Cosmological Coherent State Expectation Values in LQG I. Isotropic Kinematics
Andrea Dapor, Klaus Liegener
This is the first paper of a series dedicated to LQG coherent states and cosmology. The concept is based on the effective dynamics program of Loop Quantum Cosmology, where the clas…
Cosmological Effective Hamiltonian from full Loop Quantum Gravity Dynamics
Andrea Dapor, Klaus Liegener
The concept of effective dynamics has proven successful in LQC, a loop-inspired quantization of cosmological spacetimes. We apply the same idea of its derivation in LQC to the full…