We continue the study of Ambrosio and Serfaty (2008) [4] on the Chapman–Rubinstein–Schatzman–E evolution model for superconductivity, viewed as a gradient flow on the space of measures equipped with the quadratic Wasserstein structure. In Ambrosio and Serfaty (2008) [4] we considered the case of positive (probability) measures, while here we consider general real measures, as in the physical model. Understanding the evolution as a gradient flow in this context gives rise to several new questions, in particular how to define a “Wasserstein” distance for signed measures. We generalize the minimizing movement scheme of Ambrosio et al. (2005) [3] in this context, we show the entropy argument of Ambrosio and Serfaty (2008) [4] still carries through, and derive an evolution equation for the measure which contains an error term compared to the Chapman–Rubinstein–Schatzman–E model. Moreover, we also show the same applies to a very similar dissipative model on the whole plane.
@article{AIHPC_2011__28_2_217_0, author = {Ambrosio, Luigi and Mainini, Edoardo and Serfaty, Sylvia}, title = {Gradient flow of the Chapman--Rubinstein--Schatzman model for signed vortices}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, volume = {28}, year = {2011}, pages = {217-246}, doi = {10.1016/j.anihpc.2010.11.006}, mrnumber = {2784070}, zbl = {1233.49022}, language = {en}, url = {http://dml.mathdoc.fr/item/AIHPC_2011__28_2_217_0} }
Ambrosio, Luigi; Mainini, Edoardo; Serfaty, Sylvia. Gradient flow of the Chapman–Rubinstein–Schatzman model for signed vortices. Annales de l'I.H.P. Analyse non linéaire, Tome 28 (2011) pp. 217-246. doi : 10.1016/j.anihpc.2010.11.006. http://gdmltest.u-ga.fr/item/AIHPC_2011__28_2_217_0/
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