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- Jan Govaerts
- 1991

Metric independent σ models are constructed. These are field theories which generalise the membrane idea to situations where the target space has fewer dimensions than the base manifold. Instead of… (More)

We give precise meaning to piecewise constant potentials in non-commutative quantum mechanics. In particular we discuss the infinite and finite non-commutative spherical well in two dimensions. Using… (More)

The general construction of self-adjoint configuration space representations of the Heisenberg algebra over an arbitrary manifold is considered. All such inequivalent representations are parametrised… (More)

- Jan Govaerts
- 2002

With the two most profound conceptual revolutions of XX th century physics, quantum mechanics and relativity, which have culminated into relativistic spacetime geometry and quantum gauge field theory… (More)

- Emily B. Thomas, René Prieels, +11 authors Juri Sromicki
- 2001

New reparametrisation invariant field equations are constructed which describe d-brane models in a space of d + 1 dimensions. These equations, like the recently discovered scalar field equations in d… (More)

- Jan Govaerts
- 1997

Recently, within the context of the phase space coherent state path integral quantisation of constrained systems, John Klauder introduced a reproducing kernel for gauge invariant physical states,… (More)

- P. Ackerbauer, Dilan Balin, +27 authors Piotr Wojciechowski
- 1998

The muon capture rate in the reaction μ− + 3He → νμ + 3H has been measured at PSI using a modular high pressure ionization chamber. The rate corresponding to statistical hyperfine population of the… (More)

The celebrated exactly solvable “Schwinger” model, namely massless twodimensional QED, is revisited. The solution presented here emphasizes the nonperturbative relevance of the topological sector… (More)