| Autor: |
Eduardo Grossi, Nicolas Wink |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
SciPost Physics Core, Vol 6, Iss 4, p 071 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-9366 |
| DOI: |
10.21468/SciPostPhysCore.6.4.071 |
| Popis: |
We demonstrate the applicability and advantages of Discontinuous Galerkin (DG) schemes in the context of the Functional Renormalization Group (fRG). We investigate the $O(N)$-model in the large $N$ limit. It is shown that the flow equation for the effective potential can be cast into a conservative form. We discuss results for the Riemann problem, as well as initial conditions leading to a first and second order phase transition. In particular, we unravel the mechanism underlying first order phase transitions, based on the formation of a shock in the derivative of the effective potential. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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