Road closures that will happen just after Gate 7 from 14th July for 2.5 weeks, possibly 3 weeks:
There will be pedestrian access down the side of maths to the East west link ( Next to Somerville).
No pedestrian access down past Gibson/ Harkness/ GTC during this time.
Vehicle access will still be available from Gate 7 to car lifts and the revolving maths doors/ disabled parking.
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13:30
Generalised symmetries and scattering amplitudes
Abstract
In this talk we review some recent applications of generalised symmetries to scattering amplitudes. We start in 4d by describing the connection between spontaneously broken higher-form symmetries and soft theorems for scattering amplitudes of the associated Nambu-Golstone bosons, and show a new soft theorem for theories with a so-called 2-group symmetry. Then, we switch gears and consider non-invertible symmetries in 2d theories. We show that the standard form of the S-matrix is incompatible with the non-invertible symmetry, and derive new S-matrices satisfying a modified crossing symmetry.
Junior Strings is a seminar series where DPhil students present topics of common interest that do not necessarily overlap with their own research area. This is primarily aimed at PhD students and post-docs but everyone is welcome.
Maven Publishing is currently collaborating with an author on a new A-level maths textbook series. They are looking for mathematically strong and education-minded undergraduates to support them with a range of tasks over the summer, including answer-checking and reviewing content.
If you have:
- Excellent mathematical skills
- An interest in education or publishing
they would love to hear from you!
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Born on this day: Polish mathematician Helena Rasiowa