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SUMMARY:An on-shell view of four-dimensional blackholes
DTSTART;VALUE=DATE-TIME:20201201T010000Z
DTEND;VALUE=DATE-TIME:20201201T030000Z
DTSTAMP;VALUE=DATE-TIME:20211204T200918Z
UID:indico-contribution-791-2288@conference-indico.kek.jp
DESCRIPTION:Speakers: Yu-Tin Huang (NTU)\nIn this lecture\, I will introdu
ce massive spinor helicity formalism developed in 1709.04891\, and explore
the electromagnetic/gravitational interactions of high spin particles. We
will define\, kinematically\, minimal coupling for particles of arbitrary
spin. While there are no known elementary particles beyond spin-2\, we wi
ll demonstrate that these minimal coupling the multiple spin-moments of ro
tating black holes. This particle like description of black hole dynamics
is a reflection of the no hair theorem.\n\nhttps://conference-indico.kek.j
p/event/117/contributions/2288/
LOCATION:
URL:https://conference-indico.kek.jp/event/117/contributions/2288/
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SUMMARY:Introduction to the amplituhedron
DTSTART;VALUE=DATE-TIME:20201202T010000Z
DTEND;VALUE=DATE-TIME:20201202T030000Z
DTSTAMP;VALUE=DATE-TIME:20211204T200918Z
UID:indico-contribution-791-2289@conference-indico.kek.jp
DESCRIPTION:Speakers: Ryota Kojima (NTU)\nRecent years have revealed a var
iety of mathematical and physical structures underlying scattering amplitu
des\, with redefinitions of scattering amplitudes where the usual principl
es of locality and unitarity are derivative from geometry. The amplituhedr
on is one of the examples\, a purely geometric object which gives scatteri
ng amplitudes of planar N=4 SYM. All tree-level amplitudes and all-loop in
tegrands correspond to the differential forms with logarithmic singulariti
es on the boundaries of the amplituhedron. In this lecture\, I will give a
review of scattering amplitudes in planar N-4 SYM first. After this\, I w
ill explain the definition of the amplituhedron and see how to obtain scat
tering amplitudes from this geometric object.\n\nhttps://conference-indico
.kek.jp/event/117/contributions/2289/
LOCATION:
URL:https://conference-indico.kek.jp/event/117/contributions/2289/
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