TY - JOUR ID - publications16518 UR - http://tse-fr.eu/pub/28180 A1 - Blanchet, Adrien Y1 - 2013/06// N2 - These notes are dedicated to recent global existence and regularity results on the parabolic-elliptic Keller-Segel model in dimension 2, and its generalisation with nonlinear diffusion in higher dimensions, obtained throught a gradient flow approach in the Wassertein metric. These models have a critical mass Mc such that the solutions exist globally in time if the mass is less than Mc and above which there are solutions which blowup in finite time. The main tools, in particular the free energy, and the idea of the methods are set out. PB - Kyoto University JF - RIMS Kokyuroku's lecture note VL - vol.1837 KW - chemo-taxis KW - Keller-Segel model KW - degenerate diffusion KW - minimising scheme KW - Monge-Kantorovich distance SN - 1881-6193 TI - A gradient flow approach to the Keller-Segel systems SP - 52 AV - public EP - 73 ER -