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Events Archive 2024
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Fox and Hedgehog Seminar Series  'Categorical symmetries in QFT'—David JORDAN
Category theory and representation theory are branches of mathematics concerned with very general collections of objects and how to transform – i.e. exhibit symmetries – between them. There is a recent upsurge of interest from the physics community in the role of categorical representation theory to capture the topological symmetries of ...
Room 6201, JCMB
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Superfun with Supercomposition algebras and their application to Supersymmetric spacetimes and the Standard Model—Vatsalya VAIBHAV
The purpose of this talk would be to give a pedagogical introduction to composition algebras, superalgebras, and finally supercomposition algebras. Hurwitz’s celebrated theorem states that there can be only seven composition algebras over the field of real numbers, namely the real numbers, the complex numbers, the quaternions, the octonions ...
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Justifying Dimensional Regularization—Sam TEALE
In the computation of Feynman integrals divergences are common. To make sense of the divergent integral we employ a regulator so we can manipulate a well defined object. Many regulators are available and have various pros and cons. One of the most common choices is dimensional regularization where we analytically ...
Higgs Centre Seminar Room, JCMB
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Fox and Hedgehog Seminar Series  'A category theorist thinks about entropy'—Tom LEINSTER
Category theorists love pointing at some important concept from
another branch of mathematics or science and saying "it's just a ...",
where the rest of the sentence will involve some word like "universal",
"functor" or "adjoint". This can be clarifying for both the subject at
hand and its relationship with ...
Higgs Centre Seminar Room, JCMB
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Fox and Hedgehog Seminar Series  'A cosmologist looks at the genetic code'—Latham BOYLE
At early times, the universe was an almost perfectly uniform plasma of elementary particles in almost perfect thermal equilibrium. Then, at a later point, it "came alive" (at least in one region, on Earth) – it began evolving and learning about itself, first unconsciously and later deliberately. How did that transition ...
Higgs Centre Seminar Room, JCMB
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