7 papers
Effective Spin Foam Models for Lorentzian Quantum Gravity
Seth K. Asante, Bianca Dittrich, José Padua-Arguelles
Making the Lorentzian path integral for quantum gravity well-defined and computable has been a long standing challenge. In this work we adopt the recently proposed effective spin f…
Discrete gravity dynamics from effective spin foams
Seth K. Asante, Bianca Dittrich, Hal M. Haggard
The first computation of a spin foam dynamics that provides a test of the quantum equations of motions of gravity is presented. Specifically, a triangulation that includes an inner…
Effective Spin Foam Models for Four-Dimensional Quantum Gravity
Seth K. Asante, Bianca Dittrich, Hal M. Haggard
A number of approaches to four-dimensional quantum gravity, such as loop quantum gravity and holography, situate areas as their fundamental variables. However, this choice of kinem…
Quantum geometry from higher gauge theory
Seth K. Asante, Bianca Dittrich, Florian Girelli +2
Higher gauge theories play a prominent role in the construction of 4d topological invariants and have been long ago proposed as a tool for 4d quantum gravity. The Yetter lattice mo…
Holographic formulation of 3D metric gravity with finite boundaries
Seth K. Asante, Bianca Dittrich, Florian Hopfmueller
In this work we construct holographic boundary theories for linearized 3D gravity, for a general family of finite or quasi-local boundaries. These boundary theories are directly de…
Holographic description of boundary gravitons in (3+1) dimensions
Seth K. Asante, Bianca Dittrich, Hal M. Haggard
Gravity is uniquely situated in between classical topological field theories and standard local field theories. This can be seen in the the quasi-local nature of gravitational obse…