{"title":"Reply to Comment on ‘Critical points of Potts and O(N) models from eigenvalue identities in periodic Temperley–Lieb algebras’","authors":"Jesper Lykke Jacobsen","doi":"10.1088/1751-8121/ad4d33","DOIUrl":"https://doi.org/10.1088/1751-8121/ad4d33","url":null,"abstract":"The authors replies to the comment made by Yang and Zhou (2024 J. Phys. A: Math. Theor.) on his 2015 paper entitled ‘Critical points of Potts and O(N) models from eigenvalue identities in periodic Temperley–Lieb algebras’ (Jacobsen 2015 J. Phys. A: Math. Theor. 48 454003).","PeriodicalId":502730,"journal":{"name":"Journal of Physics A: Mathematical and Theoretical","volume":"358 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141380928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mehran Jalali Farahani, Christian Saemann, Martin Wolf
{"title":"Field theory equivalences as spans of L\u0000 ∞-algebras","authors":"Mehran Jalali Farahani, Christian Saemann, Martin Wolf","doi":"10.1088/1751-8121/ad5521","DOIUrl":"https://doi.org/10.1088/1751-8121/ad5521","url":null,"abstract":"\u0000 Semi-classically equivalent field theories are related by a quasi-isomorphism between their underlying L∞-algebras, but such a quasi-isomorphism is not necessarily a homotopy transfer. We demonstrate that all quasi-isomorphisms can be lifted to spans of L∞-algebras in which the quasi-isomorphic L∞-algebras are obtained from a correspondence L∞-algebra by a homotopy transfer. Our construction is very useful: homotopy transfer is computationally tractable, and physically, it amounts to integrating out fields in a Feynman diagram expansion. Spans of L∞-algebras allow for a clean definition of quasi-isomorphisms of cyclic L∞-algebras. Furthermore, they appear naturally in many contexts within physics. As examples, we first consider scalar field theory with interaction vertices blown up in different ways. We then show that (non-Abelian) T-duality can be seen as a span of L∞-algebras, and we provide full details in the case of the principal chiral model. We also present the relevant span of L∞-algebras for the Penrose-Ward transform in the context of self-dual Yang-Mills theory and Bogomolny monopoles.","PeriodicalId":502730,"journal":{"name":"Journal of Physics A: Mathematical and Theoretical","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141379317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}