caa a22 4500 467884854 CHVBK 20180406152731.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s10948-006-0182-7 doi (NATIONALLICENCE)springer-10.1007/s10948-006-0182-7 On Low-Temperature Structural Phase Transitions [Elektronische Daten] [A. Cano, A. Levanyuk] We comment on zero- and low-temperature structural phase transitions, expecting that these comments might be relevant not only for this structural case. We first consider a textbook model whose classical version is the only model for which the Landau theory of phase transitions and the concept of "soft mode” introduced by Ginzburg are exact. Within this model, we reveal the effects of quantum fluctuations and thermal ones at low temperatures. To do so, the knowledge of the dynamics of the model is needed. However, as already was emphasized by Ginzburg et al. in eighties, a realistic theory for such a dynamics at high temperatures is lacking, what also seems to be the case in the low-temperature regime. Consequently, some theoretical conclusions turn out to be dependent on the assumptions on this dynamics. We illustrate this point with the low-temperature phase diagram, and discuss some unexpected shortcomings of the continuous medium approaches. Springer Science + Business Media, Inc., 2006 Phase transitions nationallicence quantum effects nationallicence Cano A. Departamento de Física de la Materia Condensada C-III, Universidad Autónoma de Madrid, E-28049, Madrid, Spain aut Levanyuk A. Departamento de Física de la Materia Condensada C-III, Universidad Autónoma de Madrid, E-28049, Madrid, Spain aut Journal of Superconductivity and Novel Magnetism Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 19/3-5(2006-07-01), 417-426 1557-1939 19:3-5<417 2006 19 10948 https://doi.org/10.1007/s10948-006-0182-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-006-0182-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cano A. Departamento de Física de la Materia Condensada C-III, Universidad Autónoma de Madrid, E-28049, Madrid, Spain aut NATIONALLICENCE 700 1- Levanyuk A. Departamento de Física de la Materia Condensada C-III, Universidad Autónoma de Madrid, E-28049, Madrid, Spain aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 19/3-5(2006-07-01), 417-426 1557-1939 19:3-5<417 2006 19 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer