Mathematisches Seminar: Bogoliubov spectrum of interacting Bose gases (WS 2013/14)
Time, room: Tuesday 8-10 in B 252
First meeting: Tuesday October 15th, 2014 in B 252 (Intro, motivation, topics).
If interested, please sign up via email ( sorensen-a-t-math.lmu.de ) until 14.10.2013.
Synopsis: We will read (and present) the paper mentioned below.
"We study the large-N limit of a system of N bosons interacting with a potential of intensity 1/N. When the ground state energy is to the first order given by Hartree's theory, we study the next order, predicted by Bogoliubov's theory. We show the convergence of the lower eigenvalues and eigenfunctions towards that of the Bogoliubov Hamiltonian (up to a convenient unitary transform). We also prove the convergence of the free energy when the system is sufficiently trapped. Our results are valid in an abstract setting, our main assumptions being that the Hartree ground state is unique and non-degenerate, and that there is complete Bose-Einstein condensation on this state. Using our method we then treat two applications: atoms with "bosonic" electrons on one hand, and trapped 2D and 3D Coulomb gases on the other hand."
Audience: Master students of Mathematics and Physics, TMP-Master.
Prerequisites: MQM2 (SoSe2013) or equivalent knowledge (i.e., J. P. Solovej, Many Body Quantum Mechanics, August 30, 2009).
Language: The speakers can choose between English and German.
Literature: [LNSS] M. Lewin, P. T. Nam, S. Serfaty, and J. P. Solovej, Bogoliubov spectrum of interacting Bose gases, arXiv:1211.2778v3, 2013. (Final version to appear in Comm. Pure Appl. Math., 2013).
Office hours: Thursday 10:15-11:00 (Room B 408) or by appointment via email.
Programme (Talks start at 08:30):
Wie halte ich einen Seminarvortrag? von Prof. Dr. Manfred Lehn, Johannes Gutenberg-Universitätt Mainz.
Letzte Änderung: 21. January 2014 (no more updates).
Thomas Østergaard Sørensen