4 papers
Gravity MHV amplitudes via Berends-Giele currents
Chanon Hasuwannakit, Kirill Krasnov
Berends and Giele derived the Parke-Taylor formula for Yang-Mills MHV amplitudes by computing Berends-Giele currents involving gluons of all-plus and all-but-one-plus helicities. R…
Four-dimensional Riemannian geometry via 2-forms
Niren Bhoja, Kirill Krasnov
In differential geometry, geometric structures can often be encoded by differential forms satisfying algebraic and differential constraints. This is in particular the case for spin…
Spinors from pure spinors
Niren Bhoja, Kirill Krasnov
We propose and develop a new method to classify orbits of the spin group in the space of its semi-spinors. The idea is to consider spinors as being built as a line…
Eguchi-Hanson harmonic spinors revisited
Guido Franchetti, Kirill Krasnov
We revisit the problem of determining the zero modes of the Dirac operator on the Eguchi-Hanson space. It is well known that there are no normalisable zero modes, but such zero mod…