Connecting boundary entropy and effective central charge at holographic interfaces
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866918476107481088 |
|---|---|
| author | Afxonidis, Evangelos Bolla, Ignacio Carreño Hoyos, Carlos Karch, Andreas |
| author_facet | Afxonidis, Evangelos Bolla, Ignacio Carreño Hoyos, Carlos Karch, Andreas |
| contents | The entanglement entropy of intervals in $1+1$ interface CFTs is modified in two ways compared to a CFT without interface: there is a finite boundary entropy contribution, and, for an interval with an endpoint at the interface, the coefficient of the logarithmically divergent contribution -- which is usually proportional to the central charge of the CFT -- is modified to an effective central charge. We show that the latter modification can be understood as a limit of the former using holographic duals of interface CFTs. Furthermore, we show that a finite contribution also appears in intervals that do not cross the interface and it is needed to ensure strong subbaditivity of the entanglement entropy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_09171 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Connecting boundary entropy and effective central charge at holographic interfaces Afxonidis, Evangelos Bolla, Ignacio Carreño Hoyos, Carlos Karch, Andreas High Energy Physics - Theory Strongly Correlated Electrons The entanglement entropy of intervals in $1+1$ interface CFTs is modified in two ways compared to a CFT without interface: there is a finite boundary entropy contribution, and, for an interval with an endpoint at the interface, the coefficient of the logarithmically divergent contribution -- which is usually proportional to the central charge of the CFT -- is modified to an effective central charge. We show that the latter modification can be understood as a limit of the former using holographic duals of interface CFTs. Furthermore, we show that a finite contribution also appears in intervals that do not cross the interface and it is needed to ensure strong subbaditivity of the entanglement entropy. |
| title | Connecting boundary entropy and effective central charge at holographic interfaces |
| topic | High Energy Physics - Theory Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2507.09171 |