Publications (27)
Holonomy Spin Foam Models: Boundary Hilbert spaces and Time Evolution Operators
Bianca Dittrich, Frank Hellmann, Wojciech Kaminski
Partial Observables in Extended Systems
Frank Hellmann
A Network of Networks Approach to Interconnected Power Grids
Paul Schultz, Frank Hellmann, Jobst Heitzig +1
Survivability of Deterministic Dynamical Systems
Frank Hellmann, Paul Schultz, Carsten Grabow +2
Multiple-event probability in general-relativistic quantum mechanics
Frank Hellmann, Mauricio Mondragon, Alejandro Perez +1
State Sums and Geometry
Frank Hellmann
Quantum gravity asymptotics from the SU(2) 15j symbol
John W. Barrett, Winston J. Fairbairn, Frank Hellmann
Lorentzian spin foam amplitudes: graphical calculus and asymptotics
John W. Barrett, Richard J. Dowdall, Winston J. Fairbairn +2
Stability of Synchrony against Local Intermittent Fluctuations in Tree-like Power Grids
Sabine Auer, Frank Hellmann, Marie Krause +1
On the Expansions in Spin Foam Cosmology
Frank Hellmann
Decoherence of a two-qubit system with a variable bath coupling operator
Markus J. Storcz, Frank Hellmann, Calin Hrelescu +1
Holonomy Spin Foam Models: Definition and Coarse Graining
Benjamin Bahr, Bianca Dittrich, Frank Hellmann +1
Geometric asymptotics for spin foam lattice gauge gravity on arbitrary triangulations
Frank Hellmann, Wojciech Kaminski
Network-induced multistability: Lossy coupling and exotic solitary states
Frank Hellmann, Paul Schultz, Patrycja Jaros +4
The Contribution of Different Electric Vehicle Control Strategies to Dynamical Grid Stability
Sabine Auer, Casper Roos, Jobst Heitzig +2
A Summary of the asymptotic analysis for the EPRL amplitude
John W. Barrett, Richard J. Dowdall, Winston J. Fairbairn +2
Asymptotic analysis of the Ponzano-Regge model for handlebodies
R. Dowdall, Henrique Gomes, Frank Hellmann
Operator Spin Foam Models
Benjamin Bahr, Frank Hellmann, Wojciech KamiÅski +2
The Unruh-deWitt Detector and the Vacuum in the General Boundary formalism
Ralf Banisch, Frank Hellmann, Dennis Raetzel
Asymptotics of 4d spin foam models
John W. Barrett, Richard J. Dowdall, Winston J. Fairbairn +3
Asymptotic analysis of the EPRL four-simplex amplitude
John W. Barrett, R. J. Dowdall, Winston J. Fairbairn +2
The impact of model detail on power grid resilience measures
Sabine Auer, Kirsten Kleis, Paul Schultz +2
Quantum collapse rules from the maximum relative entropy principle
Frank Hellmann, Wojciech KamiÅski, Ryszard PaweÅ Kostecki
Holonomy spin foam models: Asymptotic geometry of the partition function
Frank Hellmann, Wojciech Kaminski
Deciphering the imprint of topology on nonlinear dynamical network stability
Jan Nitzbon, Paul Schultz, Jobst Heitzig +2
Holonomy observables in Ponzano-Regge type state sum models
John W. Barrett, Frank Hellmann
The Construction of Spin Foam Vertex Amplitudes
Eugenio Bianchi, Frank Hellmann