$W_{1+\infty}$ and $\widetilde W$ algebras, and Ward identities
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| Format: | Preprint |
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2023
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| _version_ | 1866914630515818496 |
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| author | Drachov, Ya. Mironov, A. Popolitov, A. |
| author_facet | Drachov, Ya. Mironov, A. Popolitov, A. |
| contents | It was demonstrated recently that the $W_{1+\infty}$ algebra contains commutative subalgebras associated with all integer slope rays (including the vertical one). In this paper, we realize that every element of such a ray is associated with a generalized $\widetilde W$ algebra. In particular, the simplest commutative subalgebra associated with the rational Calogero Hamiltonians is associated with the $\widetilde W$ algebras studied earlier. We suggest a definition of the generalized $\widetilde W$ algebra as differential operators in variables $p_k$ basing on the matrix realization of the $W_{1+\infty}$ algebra, and also suggest an unambiguous recursive definition, which, however, involves more elements of the $W_{1+\infty}$ algebra than is contained in its commutative subalgebras. The positive integer rays are associated with $\widetilde W$ algebras that form sets of Ward identities for the WLZZ matrix models, while the vertical ray associated with the trigonometric Calogero-Sutherland model describes the hypergeometric $τ$-functions corresponding to the completed cycles. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2311_17738 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | $W_{1+\infty}$ and $\widetilde W$ algebras, and Ward identities Drachov, Ya. Mironov, A. Popolitov, A. High Energy Physics - Theory Mathematical Physics It was demonstrated recently that the $W_{1+\infty}$ algebra contains commutative subalgebras associated with all integer slope rays (including the vertical one). In this paper, we realize that every element of such a ray is associated with a generalized $\widetilde W$ algebra. In particular, the simplest commutative subalgebra associated with the rational Calogero Hamiltonians is associated with the $\widetilde W$ algebras studied earlier. We suggest a definition of the generalized $\widetilde W$ algebra as differential operators in variables $p_k$ basing on the matrix realization of the $W_{1+\infty}$ algebra, and also suggest an unambiguous recursive definition, which, however, involves more elements of the $W_{1+\infty}$ algebra than is contained in its commutative subalgebras. The positive integer rays are associated with $\widetilde W$ algebras that form sets of Ward identities for the WLZZ matrix models, while the vertical ray associated with the trigonometric Calogero-Sutherland model describes the hypergeometric $τ$-functions corresponding to the completed cycles. |
| title | $W_{1+\infty}$ and $\widetilde W$ algebras, and Ward identities |
| topic | High Energy Physics - Theory Mathematical Physics |
| url | https://arxiv.org/abs/2311.17738 |