On Two-Loop Effective Action of 2D Sigma Model
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866929213471195136 |
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| author | Akacevich, P. V. Ivanov, A. V. |
| author_facet | Akacevich, P. V. Ivanov, A. V. |
| contents | In this paper, we study two-loop contribution to the effective action of a two-dimensional sigma model. We derive a new formula, which can be applicable to a regularization of general type. As examples, we obtain known results for dimensional regularization and investigate new types of cutoff one. Also, we discuss non-local contributions and restrictions on the regularization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_02374 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | On Two-Loop Effective Action of 2D Sigma Model Akacevich, P. V. Ivanov, A. V. High Energy Physics - Theory Mathematical Physics In this paper, we study two-loop contribution to the effective action of a two-dimensional sigma model. We derive a new formula, which can be applicable to a regularization of general type. As examples, we obtain known results for dimensional regularization and investigate new types of cutoff one. Also, we discuss non-local contributions and restrictions on the regularization. |
| title | On Two-Loop Effective Action of 2D Sigma Model |
| topic | High Energy Physics - Theory Mathematical Physics |
| url | https://arxiv.org/abs/2304.02374 |