6 citations · 16 across the 7 of their papers we have counts for
7 papers
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…
Casimir driven evolution of the universe
Frank Antonsen, Karsten Bormann
For a Friedman-Robertson-Walker space-time in which the only contribution to the stress-energy tensor comes from the renormalised zero-point energy (i.e. the Casimir energy) of the…
Effective Actions for Spin 0,1/2,1 in Curved Spacetimes
Frank Antonsen, Karsten Bormann
We calculate the effective potentials for scalar, Dirac and Yang-Mills fields in curved backgrounds using a new method for the determination of the heat kernel involving a re-summa…
On ``Effective potential for a covariantly constant gauge field in curved spacetime''
Frank Antonsen, Karsten Bormann
We extend recent work by Elizalde et al. to incorporate curvatures which are not small and backgrounds which are not just . Some possible p…
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.…
The Casimir Effect of Curved Space-time (formal developments)
Karsten Bormann, Frank Antonsen
The free energy due to the vacuum fluctuations of matter fields on a classical gravitational background is discussed. It is shown explicitly how this energy is calculated for a non…