Volume 68, Number 4, November 2004
|Page(s)||473 - 479|
|Section||The physics of elementary particles and fields|
|Published online||22 October 2004|
Critical macroscopic quantum effects in quantum nucleation
Institute of Theoretical Physics and Department of Physics Shanxi University, Taiyuan - Shanxi, 030006, PRC
2 National Laboratory for Magnetism, Institute of Physics Chinese Academy of Sciences - Beijing 100080, PRC
3 Department of Physics, University of Kaiserslautern 67653 Kaiserslautern, Germany
4 Department of Physics, Kyung Nam University - Masan 631-701, Korea
Accepted: 20 September 2004
It is shown that a characteristic feature of quantum nucleation viewed as a decay process of metastable states is that the theoretical temperature dependence of the nucleation rate indicates a sharp first-order phase transition of the crossover from the quantum tunneling regime to the thermal hopping regime. We, furthermore, demontrate that the experimentally observed temperature dependence of the phase separation of supersaturated - liquid mixtures at low temperatures can be understood by the first-order phase transition of quantum nucleation.
PACS: 11.15.Kc – Classical and semiclassical techniques / 03.65.Sq – Semiclassical theories and applications / 05.70.Fh – Phase transitions: general studies
© EDP Sciences, 2004
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