The Herglotz variational principle for dissipative field theories
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2022
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| _version_ | 1866909597129768960 |
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| author | Gaset, Jordi Lainz, Manuel Mas, Arnau Rivas, Xavier |
| author_facet | Gaset, Jordi Lainz, Manuel Mas, Arnau Rivas, Xavier |
| contents | In the recent years, with the incorporation of contact geometry, there has been a renewed interest in the study of dissipative or non-conservative systems in physics and other areas of applied mathematics. The equations arising when studying contact Hamiltonian systems can also be obtained via the Herglotz variational principle. The contact Lagrangian and Hamiltonian formalisms for mechanical systems has also been generalized to field theories. The main goal of this paper is to develop a generalization of the Herglotz variational principle for first-order and higher-order field theories. In order to illustrate this, we study three examples: the damped vibrating string, the Korteweg-De Vries equation, and an academic example showing that the non-holonomic and the vakonomic variational principles are not fully equivalent. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_17058 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The Herglotz variational principle for dissipative field theories Gaset, Jordi Lainz, Manuel Mas, Arnau Rivas, Xavier Mathematical Physics 37K58, 37L05, 53D10, 35Q53 In the recent years, with the incorporation of contact geometry, there has been a renewed interest in the study of dissipative or non-conservative systems in physics and other areas of applied mathematics. The equations arising when studying contact Hamiltonian systems can also be obtained via the Herglotz variational principle. The contact Lagrangian and Hamiltonian formalisms for mechanical systems has also been generalized to field theories. The main goal of this paper is to develop a generalization of the Herglotz variational principle for first-order and higher-order field theories. In order to illustrate this, we study three examples: the damped vibrating string, the Korteweg-De Vries equation, and an academic example showing that the non-holonomic and the vakonomic variational principles are not fully equivalent. |
| title | The Herglotz variational principle for dissipative field theories |
| topic | Mathematical Physics 37K58, 37L05, 53D10, 35Q53 |
| url | https://arxiv.org/abs/2211.17058 |