On the properties of the transition matrix in bouncing cosmologies

Jan, 2004
4 pages
Published in:
  • Phys.Rev.D 69 (2004) 107301
e-Print:

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Abstract:
We elaborate further on the evolution properties of cosmological fluctuations through a bounce. We show this evolution to be describable either by ``transmission'' and ``reflection'' coefficients or by an effective unitary S-matrix. We also show that they behave in a time reversal invariant way. Therefore, earlier results are now interpreted in a different perspective and put on a firmer basis.
  • 98.70.Vc
  • 98.80.Cq
  • cosmological model
  • S-matrix
  • fluctuation
  • time reversal: invariance
  • Schroedinger equation
  • unitarity
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