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5 papers · 2 filters
The Schwinger Model and the Physical Projector: a Nonperturbative Quantization without Gauge Fixing
Gabriel Y. H. Avossevou, Jan Govaerts
Based on the physical projector approach, a nonpertubative quantization of the massless Schwinger model is considered which does not require any gauge fixing. The spectrum of physi…
The Quantum Geometer's Universe: Particles, Interactions and Topology
Jan Govaerts
With the two most profound conceptual revolutions of XXth century physics, quantum mechanics and relativity, which have culminated into relativistic spacetime geometry and quantum…
A c=-2 boundary changing operator for the Abelian sandpile
Philippe Ruelle
We consider the unoriented two-dimensional Abelian sandpile model on the half-plane with open and closed boundary conditions. We show that the operator effecting the change from cl…
The Cosmological Constant of One-Dimensional Matter Coupled Quantum Gravity is Quantized
Jan Govaerts
Coupling any interacting quantum mechanical system to gravity in one dimension requires the cosmological constant to belong to the matter energy spectrum and thus to be quantized,…
Non periodic Ishibashi states: the su(2) and su(3) affine theories
Philippe Ruelle, Olivier Verhoeven
We consider the su(2) and su(3) affine theories on a cylinder, from the point of view of their discrete internal symmetries. To this end, we adapt the usual treatment of boundary c…