منابع مشابه
On Adiabatic Pair Creation
We give here the proof that pair creation arises from the Dirac equation with an external time dependent potential. Pair creation happens with probability one if the potential changes adiabatically in time and becomes overcritical, that is when an eigenvalue curve (as function of time) bridges the gap between the negative and positive spectral continuum. The potential may be assumed to be zero ...
متن کاملAdiabatic Pair Creation
We give here the proof that pair creation in a time dependent potentials is possible. It happens with probability one if the potential changes adiabatically in time and becomes overcritical, that is when an eigenvalue enters the upper spectral continuum. The potential may be assumed to be zero at large negative and positive times. The rigorous treatment of this effect has been lacking since the...
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It has been conjectured that the vortex solution on a D-brane anti-D-brane system represents a D-brane of two lower dimension. We establish this result by first identifying a series of marginal deformations which create the vortex antivortex pair on the brane antibrane system, and then showing that under this series of marginal deformations the original D-brane anti-D-brane system becomes a D-b...
متن کاملFRW-type cosmologies with adiabatic matter creation.
Some properties of cosmological models with matter creation are investigated in the framework of the Friedman-Robertson-Walker (FRW) line element. For adiabatic matter creation, as developed by Prigogine and coworkers, we derive a simple expression relating the particle number density n and energy density ρ which holds regardless of the matter creation rate. The conditions to generate inflation...
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The flat inflationary dust universe with matter creation proposed by Prigogine and coworkers is generalized and its dynamical properties are reexamined. It is shown that the starting point of these models depends critically on a dimensionless parameter Σ, closely related to the matter creation rate ψ. For Σ bigger or smaller than unity flat universes can emerge, respectively, either like a Big-...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 2008
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s00220-008-0530-5