Chasing Renormalons in One Dimension

Duration: 59 mins 4 secs

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Description:	Tomas Reis University of Geneva 17 June 2021 – 13:30 to 14:30


Created:	2021-06-18 09:56
Collection:	Applicable resurgent asymptotics: towards a universal theory
Publisher:	Isaac Newton Institute for Mathematical Sciences
Copyright:	Tomas Reis
Language:	eng (English)


Abstract:	This talks concerns the use of the framework of resurgence techniques in identifying renormalon effects. Using integrability and/or large N, we can identify them in 1+1 QFTs and 1D condensed matter systems, revealing that the presence of renormalons is more widespread than was previously expected. I will specialise in the case of the 1D fermion gas with a Dirac-delta attractive potential (Gaudin-Yang model), where an interplay with superconductivity emerges, and the non-linear sigma model.

Abstract:

This talks concerns the use of the framework of resurgence techniques in identifying renormalon effects. Using integrability and/or large N, we can identify them in 1+1 QFTs and 1D condensed matter systems, revealing that the presence of renormalons is more widespread than was previously expected. I will specialise in the case of the 1D fermion gas with a Dirac-delta attractive potential (Gaudin-Yang model), where an interplay with superconductivity emerges, and the non-linear sigma model.

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