In this manuscript we extend De Giorgi’s interpolation method to a class of parabolic equations which are not gradient flows but possess an entropy functional and an underlying Lagrangian. The new fact in the study is that not only the Lagrangian may depend on spatial variables, but it does not induce a metric. Assuming the initial condition to be a density function, not necessarily smooth, but solely of bounded first moments and finite “entropy”, we use a variational scheme to discretize the equation in time and construct approximate solutions. Then De Giorgi’s interpolation method is revealed to be a powerful tool for proving convergence of our algorithm. Finally we show uniqueness and stability in of our solutions.
@article{ASNSP_2011_5_10_1_207_0, author = {Figalli, Alessio and Gangbo, Wilfrid and Yolcu, T\"urkay}, title = {A variational method for a class of parabolic {PDEs}}, journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze}, pages = {207--252}, publisher = {Scuola Normale Superiore, Pisa}, volume = {Ser. 5, 10}, number = {1}, year = {2011}, mrnumber = {2829314}, zbl = {1239.35074}, language = {en}, url = {http://www.numdam.org/item/ASNSP_2011_5_10_1_207_0/} }
TY - JOUR AU - Figalli, Alessio AU - Gangbo, Wilfrid AU - Yolcu, Türkay TI - A variational method for a class of parabolic PDEs JO - Annali della Scuola Normale Superiore di Pisa - Classe di Scienze PY - 2011 SP - 207 EP - 252 VL - 10 IS - 1 PB - Scuola Normale Superiore, Pisa UR - http://www.numdam.org/item/ASNSP_2011_5_10_1_207_0/ LA - en ID - ASNSP_2011_5_10_1_207_0 ER -
%0 Journal Article %A Figalli, Alessio %A Gangbo, Wilfrid %A Yolcu, Türkay %T A variational method for a class of parabolic PDEs %J Annali della Scuola Normale Superiore di Pisa - Classe di Scienze %D 2011 %P 207-252 %V 10 %N 1 %I Scuola Normale Superiore, Pisa %U http://www.numdam.org/item/ASNSP_2011_5_10_1_207_0/ %G en %F ASNSP_2011_5_10_1_207_0
Figalli, Alessio; Gangbo, Wilfrid; Yolcu, Türkay. A variational method for a class of parabolic PDEs. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 5, Tome 10 (2011) no. 1, pp. 207-252. http://www.numdam.org/item/ASNSP_2011_5_10_1_207_0/
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