Reference : Competition between collective and individual dynamics
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/10993/31619
Competition between collective and individual dynamics
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Grauwin, Sebastian [Inst Rhonalpin Syst Complexes, IXXI, F-69007 Lyon, France.]
Bertin, Eric [Inst Rhonalpin Syst Complexes, IXXI, F-69007 Lyon, France.]
Lemoy, Rémi mailto []
Jensen, Pablo [Inst Rhonalpin Syst Complexes, IXXI, F-69007 Lyon, France.]
2009
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Natl Acad Sciences
106
49
20622-20626
Yes (verified by ORBilu)
0027-8424
Washington
[en] socioeconomy ; statistical physics ; segregation ; phase transition ; coordination
[en] Linking microscopic and macroscopic behavior is at the heart of many natural and social sciences. This apparent similarity conceals essential differences across disciplines: Although physical particles are assumed to optimize the global energy, economic agents maximize their own utility. Here, we solve exactly a Schelling-like segregation model, which interpolates continuously between cooperative and individual dynamics. We show that increasing the degree of cooperativity induces a qualitative transition from a segregated phase of low utility toward a mixed phase of high utility. By introducing a simple function that links the individual and global levels, we pave the way to a rigorous approach of a wide class of systems, where dynamics are governed by individual strategies.
http://hdl.handle.net/10993/31619
10.1073/pnas.0906263106

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