# Mathematics Colloquia and Seminars

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### Hardy-Lieb-Thirring inequalities and the stability of relativistic matter in magnetic fields

**Mathematical Physics & Probability**

Speaker: | Rupert Frank, KTH Stockholm |

Location: | 1147 MSB |

Start time: | Tue, Nov 28 2006, 2:10PM |

We show that the Lieb-Thirring inequalities on moments of negative eigenvalues of Schr\"odinger operators remain true, with possibly different constants, when the critical Hardy-weight is subtracted from the Laplace operator. Similar results are true for fractional powers of the Laplacian and, in particular, for relativistic Schr\"odinger operators. We also allow for the inclusion of magnetic vector potentials. As an application, we extend the proof of stability of relativistic matter with magnetic fields to the critical value of the nuclear charge. The talk is based on joint works with T. Ekholm and with E.H. Lieb and R. Seiringer.