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Instanton effects vs resurgence in the O(3) sigma model
We investigate the ground-state energy of the integrable two dimensional O(3) sigma model in a magnetic field. By determining a large number of perturbative coefficients we explore the closest singularities of the corresponding Borel function. We then confront its median resummation to the high prec...
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| Main Authors: | , , , |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
Elsevier
2022-06-01
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| Serier: | Physics Letters B |
| Online adgang: | http://www.sciencedirect.com/science/article/pii/S0370269322002076 |
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