From quasinormal modes to constitutive relations
Duration: 1 hour 13 mins
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About this item
| Description: |
Withers, B
Thursday 13th May 2021 - 16:00 to 17:00 |
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| Created: | 2021-05-17 12:37 |
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| Collection: | Applicable resurgent asymptotics: towards a universal theory |
| Publisher: | Isaac Newton Institute for Mathematical Sciences |
| Copyright: | Withers, B |
| Language: | eng (English) |
| Abstract: | I will review recent developments in large-order
relativistic hydrodynamics. Starting with properties gleaned from holographic theories and black hole physics, I will show that quasinormal mode dispersion relations have a finite radius of convergence set by branch points corresponding to 'mode collisions' in the complex momentum plane. I will explore the consequences of this observation for the hydrodynamic gradient expansion of the one-point functions of currents, including the role played by initial data, the impact of nonlinearities, and the structure of transseries. |
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