Characterization of a quantum phase transition in Dirac systems by means of the wavepacket dynamics Romera Gutiérrez, Elvira Torres, J. J. Dirac systems Wave-packets Fractional revivals Graphene We study the signatures of phase transitions in the time evolution of wave-packets by analyzing two simple model systems: a graphenequantum dot model in a magnetic field and a Diracoscillator in a magnetic field. We have characterized the phase transitions using the autocorrelation function. Our work also reveals that the description in terms of Shannon entropy of the autocorrelation function is a clear phase transition indicator. 2014-06-18T09:14:31Z 2014-06-18T09:14:31Z 2012 info:eu-repo/semantics/article Romera, E.; Torres, J.J. Characterization of a quantum phase transition in Dirac systems by means of the wavepacket dynamics. AIP Advances, 2: 042121 (2012). [http://hdl.handle.net/10481/32293] 2158-3226 http://hdl.handle.net/10481/32293 10.1063/1.4764862 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License AIP Publishing