Seminars/Colloquia
Thursday 17 June 2021 14:00 - 15:00 online only
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Abstract: Very light axions are a generic prediction of string compactifications. If cosmic strings associated with these axions were produced in the early universe, they quickly approach a so-called scaling solution, such that strings persist in the sky today. I will present some remarkable signals of such strings coupled to photons. In this string background, there is a model-independent polarization rotation of CMB photons equal to alpha_em up to a rational number. This manifests itself as a rotation…
Seminars/Colloquia
Thursday 24 June 2021 14:00 - 15:00 online only
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Abstract: Vortices, string-like topologically nontrivial solutions of field equations, naturally appear in the theory of superconductivity, superfluidity, and QCD confinement. Giant vortices carrying large topological charge are of particular interest and are observed experimentally in a variety of quantum condensed matter systems. In this talk I describe a theory of giant vortices based on an asymptotic expansion in inverse powers of their winding number n. In this framework the winding number is…
Workshops/Conferences
Monday 06 September 2021 - Wednesday 15 September 2021
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Abstract: Overview The ORIGINS Data Science Laboratory is organising the next set of block courses from September 6th - 15th 2021 on the theme of Practical Inference for Researchers in the Physical Sciences. The idea with the block course format is to have two weeks of more intense lectures and tutorial sessions. With this course, we want to focus on bridging the gap between learning about Bayesian probability theory and the actual application of these methods to realistic research problems. In this…