Events - Daily
|Tuesday, October 06|
Pheno & Vino Seminar, Yoni Kahn, Princeton U., "The Goldstone and Goldstino of Supersymmetric Inflation"
I construct an effective field theory (EFT) for the minimal degrees of freedom of supersymmetric inflation. These can be viewed as the goldstone of spontaneously broken time translations, and the goldstino of spontaneously broken SUSY, both of which are tied together in an interesting way through the structure of the SUSY algebra. I briefly outline some phenomenological consequences, including a modified goldstino/gravitino dispersion relation and a time-dependent gravitino mass phase.
Jadwin 303 · 4:00 p.m.– 5:30 p.m.
Math Physics Seminar, Daniel Sternheimer, Rikkyo & Bourgogne U's, "The reasonable effectiveness of mathematical deformation theory in physics, .......
In 1960 Wigner marveled about ``the unreasonable effectiveness of mathematics in the natural sciences," referring mainly to physics. In that spirit we shall first explain how a posteriori relativity and quantum mechanics can be obtained from previously known theories using the mathematical theory of deformations. After a tachyonic overview of how the standard model of elementary particles arose from empirically guessed symmetries we indicate how these symmetries could (very reasonably) be obtained from those of relativity using deformations (including quantization). This poses difficult and interesting mathematical problems with potentially challenging applications to physics.
Jadwin 343 · 4:30 p.m.– 5:30 p.m.