4 papers · 1 filter
Time Machines and the Breakdown of Unitarity
Frank Antonsen, Karsten Bormann
We present a generic way of thinking about time machines from the view of a far away observer. In this model the universe consists of three (or more) regions: One containing the en…
Zeta-Functions and Star-Products
Frank Antonsen
We use the definition of a star (or Moyal or twisted) product to give a phasespace definition of the -function. This allows us to derive new closed expressions for the coefficie…
Wormholes and Time-Machines
Frank Antonsen, Karsten Bormann
It has been proposed that wormholes can be made to function as time-machines. This opens up the question of whether this can be accomodated within a self-consistent physics or not.…
Wigner-Weyl-Moyal Formalism on Algebraic Structures
Frank Antonsen
We first introduce the Wigner-Weyl-Moyal formalism for a theory whose phase-space is an arbitrary Lie algebra. We also generalize to quantum Lie algebras and to supersymmetric theo…