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Decoherence and the Appearance of a Classical World in Quantum Theory

- D. Giulini, E. Joos, C. Kiefer, J. Kupsch, I. Stamatescu, H. Zeh
- Physics
- 1996

1 Introduction.- 2 Basic Concepts and Their Interpretation.- 3 Decoherence Through Interaction with the Environment.- 4 Decoherence in Quantum Field Theory and Quantum Gravity.- 5 Consistent… Expand

Quantum Measurement and Control

- C. Kiefer
- Physics
- 21 December 2010

In the last two decades there has been an enormous progress in the experimental investigation of single quantum systems. This progress covers fields such as quantum optics, quantum computation,… Expand

Modern Canonical Quantum General Relativity

- C. Kiefer
- Physics
- 21 June 2008

The open problem of constructing a consistent and experimentally tested quantum theory of the gravitational field has its place at the heart of fundamental physics. The main approaches can be roughly… Expand

Quantum Gravity (Cambridge Monographs on Mathematical Physics)

- C. Kiefer
- Physics
- 21 October 2005

The most difficult unsolved problem in fundamental theoretical physics is the consistent implementation of the gravitational interaction into a quantum framework, which would lead to a theory of… Expand

The semiclassical approximation to quantum gravity

- C. Kiefer
- Physics
- 9 December 1993

A detailed review is given of the semiclassical approximation to quantum gravity in the canonical framework. This includes in particular the derivation of the functional Schr\"odinger equation and a… Expand

Accurate results for primordial black holes from spectra with a distinguished scale

- D. Blais, T. Bringmann, C. Kiefer, D. Polarski
- Physics
- 16 June 2002

We perform an accurate computation of the production rate for primordial black holes (PBHs). The reason is that the underlying mass variance had been overestimated systematically, as was shown… Expand

Quantum gravity: general introduction and recent developments

- C. Kiefer
- Physics
- 29 August 2005

I briefly review the current status of quantum gravity. After giving some general motivations for the need of such a theory, I discuss the main approaches in quantizing general relativity: Covariant… Expand

Why do cosmological perturbations look classical to us

- C. Kiefer, D. Polarski
- Physics, Engineering
- 1 October 2008

According to the inflationary scenario of cosmology, all structure in the Universe can be traced back to primordial fluctuations during an accelerated (inflationary) phase of the very early Universe.… Expand

Pointer states for primordial fluctuations in inflationary cosmology

- C. Kiefer, I. Lohmar, D. Polarski, A. Starobinsky
- Physics
- 24 October 2006

Primordial fluctuations in inflationary cosmology acquire classical properties through decoherence when their wavelengths become larger than the Hubble scale. Although decoherence is effective, it is… Expand

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