ar X iv : q ua nt - p h / 05 05 05 6 v 1 9 M ay 2 00 5 Decoherence at absolute zero
نویسنده
چکیده
We present an analytical study of the loss of quantum coherence at absolute zero. Our model consists of a harmonic oscillator coupled to an environment of harmonic oscillators at absolute zero. We find that for an Ohmic bath, the offdiagonal elements of the density matrix in the position representation decay as a power law in time at late times. This slow loss of coherence in the quantum domain is qualitatively different from the exponential decay observed in studies of high temperature environments.
منابع مشابه
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T. Gorin, T. Prosen, T. H. Seligman, 4 and W. T. Strunz Theoretische Quantendynamik, Albert-Ludwigs-Universität, Hermann-Herder-Str. 3, 79104 Freiburg, Germany Physics Department, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia Centro Internacional de Ciencias, C.P. 62131 Cuernavaca, Morelos Mexico Centro de Ciencias F́ısicas, University of ...
متن کاملnt - p h / 05 05 05 6 v 1 9 M ay 2 00 5 Decoherence at absolute zero
We present an analytical study of the loss of quantum coherence at absolute zero. Our model consists of a harmonic oscillator coupled to an environment of harmonic oscillators at absolute zero. We find that for an Ohmic bath, the offdiagonal elements of the density matrix in the position representation decay as a power law in time at late times. This slow loss of coherence in the quantum domain...
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