# Comments on holographic entanglement entropy in $TT$ deformed conformal field theories

## Abstract

The Ryu-Takayanagi (RT) formula has been a key ingredient in our understanding of holography. Recent work on $TT$ deformations has also boosted our understanding of holography away from the conformal boundary of AdS. In this short note, we aim to refine some recent work demonstrating the success of the RT formula in $TT$ deformed theories. We emphasize general arguments that justify the use of the RT formula in general holographic theories that obey a Gubser-Klebanov-Polyakov-Witten (GKPW)-like dictionary. In doing so, we clarify subtleties related to holographic counterterms and discuss the implications for holography in general spacetimes.

- Authors:

- Publication Date:

- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan

- OSTI Identifier:
- 1543174

- Alternate Identifier(s):
- OSTI ID: 1605246

- Grant/Contract Number:
- AC02-05CH11231; SC0019380; PHY-1521446; 15H05895

- Resource Type:
- Published Article

- Journal Name:
- Physical Review D

- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 2; Journal ID: ISSN 2470-0010

- Publisher:
- American Physical Society (APS)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS

### Citation Formats

```
Murdia, Chitraang, Nomura, Yasunori, Rath, Pratik, and Salzetta, Nico. Comments on holographic entanglement entropy in T T deformed conformal field theories. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.100.026011.
```

```
Murdia, Chitraang, Nomura, Yasunori, Rath, Pratik, & Salzetta, Nico. Comments on holographic entanglement entropy in T T deformed conformal field theories. United States. doi:10.1103/PhysRevD.100.026011.
```

```
Murdia, Chitraang, Nomura, Yasunori, Rath, Pratik, and Salzetta, Nico. Fri .
"Comments on holographic entanglement entropy in T T deformed conformal field theories". United States. doi:10.1103/PhysRevD.100.026011.
```

```
@article{osti_1543174,
```

title = {Comments on holographic entanglement entropy in T T deformed conformal field theories},

author = {Murdia, Chitraang and Nomura, Yasunori and Rath, Pratik and Salzetta, Nico},

abstractNote = {The Ryu-Takayanagi (RT) formula has been a key ingredient in our understanding of holography. Recent work on TT deformations has also boosted our understanding of holography away from the conformal boundary of AdS. In this short note, we aim to refine some recent work demonstrating the success of the RT formula in TT deformed theories. We emphasize general arguments that justify the use of the RT formula in general holographic theories that obey a Gubser-Klebanov-Polyakov-Witten (GKPW)-like dictionary. In doing so, we clarify subtleties related to holographic counterterms and discuss the implications for holography in general spacetimes.},

doi = {10.1103/PhysRevD.100.026011},

journal = {Physical Review D},

number = 2,

volume = 100,

place = {United States},

year = {2019},

month = {7}

}

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DOI: 10.1103/PhysRevD.100.026011

DOI: 10.1103/PhysRevD.100.026011

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Cited by: 9 works

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