Spinors and geometric structures


Krasnov, K. (2023). Spinors and geometric structures. Perimeter Institute for Theoretical Physics. https://pirsa.org/23040164


Krasnov, Kirill. Spinors and geometric structures. Perimeter Institute for Theoretical Physics, May. 01, 2023, https://pirsa.org/23040164


          @misc{ scivideos_PIRSA:23040164,
            doi = {10.48660/23040164},
            url = {https://pirsa.org/23040164},
            author = {Krasnov, Kirill},
            keywords = {Other Physics},
            language = {en},
            title = { Spinors and geometric structures},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2023},
            month = {may},
            note = {PIRSA:23040164 see, \url{https://scivideos.org/pirsa/23040164}}

Kirill Krasnov University of Nottingham

Source Repository PIRSA
Talk Type Scientific Series


I will describe a construction that allows to understand spinors in an arbitrary number of dimensions, with arbitrary signature. I will describe what pure spinors are, and how in low dimensions all spinors are pure. The first impure spinors arise in 8 dimensions, and "purest" impure spinors are octonions. I will describe how a spinor in an arbitrary dimension defines a set of geometric structures. The easiest example of this is how a pure spinor defines a complex structure. As one increases the dimension, the types of geometric structures that are described by spinors become more and more exotic. If time permits, I will describe some examples in 14 and 16 dimensions. Almost nothing is known about spinors in dimension beyond 16.

Zoom link:  https://pitp.zoom.us/j/94776499052?pwd=RGVURlRnaEx6REJwVE10VXhqa1Q5Zz09