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Author Sepulveda, N.; Josserand, C.; Rica, S. pdf  doi
openurl 
  Title Superfluid density in a two-dimensional model of supersolid Type
  Year 2010 Publication European Physical Journal B Abbreviated Journal Eur. Phys. J. B  
  Volume 78 Issue 4 Pages (down) 439-447  
  Keywords  
  Abstract We study in 2-dimensions the superfluid density of periodically modulated states in the framework of the mean-field Gross-Pitaevskii model of a quantum solid. We obtain a full agreement for the superfluid fraction between a semi-theoretical approach and direct numerical simulations. As in 1-dimension, the superfluid density decreases exponentially with the amplitude of the particle interaction. We discuss the case when defects are present in this modulated structure. In the case of isolated defects (e.g. dislocations) the superfluid density only shows small changes. Finally, we report an increase of the superfluid fraction up to 50% in the case of extended macroscopical defects. We show also that this excess of superfluid fraction depends on the length of the complex network of grain boundaries in the system.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1434-6028 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000286669400004 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 121  
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Author Cortez, V.; Medina, P.; Goles, E.; Zarama, R.; Rica, S. pdf  doi
openurl 
  Title Attractors, statistics and fluctuations of the dynamics of the Schelling's model for social segregation Type
  Year 2015 Publication European Physical Journal B Abbreviated Journal Eur. Phys. J. B  
  Volume 88 Issue 1 Pages (down) 12 pp  
  Keywords  
  Abstract Statistical properties, fluctuations and probabilistic arguments are shown to explain the robust dynamics of the Schelling's social segregation model. With the aid of probability density functions we characterize the attractors for multiple external parameters and conditions. We discuss the role of the initial states and we show that, indeed, the system evolves towards well defined attractors. Finally, we provide probabilistic arguments to explain quantitatively the observed behavior.  
  Address [Cortez, Vasco; Goles, Eric; Rica, Sergio] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago, Chile, Email: sergio.rica@gmail.com  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1434-6028 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000348059300001 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 436  
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