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From Eduardo Fradkin
Physics 583 QFT II lecture of 5/6/2020 (last lecture!). We ended the discussion of instantons. We covered the Kosterlitz-Thouless theory of vortex unbinding in the XY… -
From Eduardo Fradkin
Physics 583 QFT II, Lecture of 5/5/2020. We discussed instantons in gauge theories, the 't Hooft-Polyakov monopole, and instantons in Yang-Mills -
From Eduardo Fradkin
Physics 583 QFT II lecture on Thursday April 30, 2020. We finished the discussion of intantons in nonlinear sigma models and their generakizations. -
From Eduardo Fradkin
Physics 583 QFT II lecture on Tuesday April 28, 2020. We discussed vortices in the 2D Abelian Higgs model and in the 2D O(2) model. We begun the discussion of instantons… -
From Eduardo Fradkin
Physics 583 QFT II lecture on April 23, 2020. We begun the discussion of instantons and solitons and introduced the concept of homotopy groups and classes. -
From Rebecca Wiltfong
Physics 583 QFT II lecture on Tuesday April 21, 2020. We finished the discussion of the the phase diagram of gauge theories with matter fields. We also discussed an… -
From Eduardo Fradkin
Physics 583 (QFT II). Lecture on 4/16/2020. We discussed Elitzur's Theorem and its implications for the phase diagrams of lattice gauge theories with Higgs fields. -
From Eduardo Fradkin
Physics 583 (QFT II) lecture on Tuesday April 14, 2020. Today we begun the discussion of non perturbative behavior of field theories. We introduced Wilson's lattice… -
From Eduardo Fradkin
Physics 583, QFT II, of March 12, 2020. We used dimensional regularization to compute the renormalization group functions for massless 𝜙^4 theory to two loop order in… -
From Eduardo Fradkin
Physics 583 (QFT II) Lecture of April 9, 2020. We finished the discussion of the large N limit of field theories and covered QED with large number of flavors, matrix… -
From Eduardo Fradkin
SP20 Physics 583 lecture for 4/7/2020. We covered the CP^N model and its large N limit. -
From Eduardo Fradkin
We begun the discussion of the large N limit of QFT. We looked at 𝜙^4 theory and the O(N) non-linear sigma model in the N ↦ ∞ limit -