Rebooting the S-matrix bootstrap

I will discuss constraints on the S-matrix of gapped, Lorentz invariant quantum field theories due to crossing symmetry, analyticity and unitarity.  In particular I will bound cubic couplings, quartic couplings and scattering lengths relevant for the elastic scattering amplitude of two identical scalar particles. After a warm-up in 1+1 dimensions I will move to 3+1 dimensions.  In the cases where the results can be compared with results in the older S-matrix literature they are in excellent agreement.

Event Type: 
Scientific Area(s): 
Event Date: 
Thursday, February 8, 2018 - 11:00 to 12:30
Bob Room
Room #: