caa a22 4500 445866977 CHVBK 20180317145500.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epjd/e2011-20200-7 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20200-7 A study on quantum discord sudden changes [Elektronische Daten] [S. Wu, H. Liu, L. Wang, X. Yi] For open quantum systems, quantum discord sudden changes (QDSCs) may appear in the dynamics instead of sudden death appears in quantum entanglement. In this paper, we study the dynamics of quantum discord and explore the relation between the entanglement sudden death and QDSC. We find that the QDSC is sensitive to the initial states and the excitation number in the total system (the qubits+ environment). By using the geometric measurement of the quantum correlation, the geometric interpretation for the QDSC is presented and the condition for the emergence of the QDSC is given. Furthermore, we observe that the entanglement sudden death and QDSC do not have one to one correspondence for open quantum systems. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Wu S. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut Liu H. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut Wang L. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut Yi X. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 613-620 1434-6060 65:3<613 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20200-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20200-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu S. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut NATIONALLICENCE 700 1- Liu H. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut NATIONALLICENCE 700 1- Wang L. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut NATIONALLICENCE 700 1- Yi X. School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Dalian, P.R. China aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 613-620 1434-6060 65:3<613 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer