Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Andrea Dei"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-63 (2024)
Abstract We revisit the minimal tension (k = 1) string theory on AdS3 × S3 × 𝕋4. We propose a new free-field description of the worldsheet theory and show how localization of string amplitudes emerges from the path integral. We exemplify our pro
Externí odkaz:
https://doaj.org/article/039bfd54d63a4d1d9f6c850f630311d6
Autor:
Andrea Dei, Emil J. Martinec
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-76 (2024)
Abstract Worldsheet string theory is solvable for a variety of backgrounds involving Neveu-Schwarz fivebranes, in terms of gauged nonlinear sigma models on group manifolds. We compute the worldsheet torus partition function of these models, and propo
Externí odkaz:
https://doaj.org/article/2df48ae0611240fa8394e03be0c3575f
Autor:
Andrea Dei, Lorenz Eberhardt
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-46 (2021)
Abstract We propose a closed-form formula for genus 0 four-point functions in AdS3 string theory with pure NS-NS flux including arbitrary amounts of spectral flow. Our formula passes many non-trivial consistency checks and has intriguing connections
Externí odkaz:
https://doaj.org/article/a8eebf5a866944f291f35386b020f73e
Autor:
Andrea Dei, Lorenz Eberhardt
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-48 (2021)
Abstract We revisit the computation of string worldsheet correlators on Euclidean AdS3 with pure NS-NS background. We compute correlation functions with insertions of spectrally flowed operators. We explicitly solve all the known constraints of the m
Externí odkaz:
https://doaj.org/article/57aa578be62c4bbfbe4d72050b739c35
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-25 (2021)
Abstract The large N limit of symmetric orbifold theories was recently argued to have an AdS/CFT dual world-sheet description in terms of an sl(2, ℝ) WZW model. In previous work the world-sheet state corresponding to the symmetric orbifold stress-e
Externí odkaz:
https://doaj.org/article/f7dce3eba8544933bc48ac5c6628d09a
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-44 (2021)
Abstract We employ the free field realisation of the psu 1 1 2 1 $$ \mathfrak{psu}{\left(1,1\left|2\right.\right)}_1 $$ world-sheet theory to constrain the correlators of string theory on AdS3 × S3 × 𝕋4 with unit NS-NS flux. In particular, we di
Externí odkaz:
https://doaj.org/article/44d980b6d1d7412884003abdbc0a5ef1
Autor:
Andrea Dei, Lorenz Eberhardt
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-47 (2020)
Abstract We exploit null vectors of the fractional Virasoro algebra of the symmetric product orbifold to compute correlation functions of twist fields in the large N limit. This yields a new method to derive correlation functions in these orbifold CF
Externí odkaz:
https://doaj.org/article/6812a8aeb93e40aea545e2f020dfdaf7
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-29 (2019)
Abstract Recently, string theory on AdS3 × S3 × 𝕋4 with one unit of NS-NS flux (k = 1) was argued to be exactly dual to the symmetric orbifold of 𝕋 4, and in particular, the full (unprotected) spectrum was matched between the two descriptions
Externí odkaz:
https://doaj.org/article/592675ecb390437ca5b282d2ac344c19
Autor:
Andrea Dei, Lorenz Eberhardt
Publikováno v:
SciPost Physics, Vol 13, Iss 3, p 053 (2022)
We continue our study of string correlators on Euclidean $\text{AdS}_3$ with pure NS-NS flux. The worldsheet and spacetime correlators have a rich analytic structure, which we analyse completely for genus 0 four-point functions. We show that corre
Externí odkaz:
https://doaj.org/article/6fd9a8c6de1c465a965084372a95bb29
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 8, Pp 1-31 (2018)
Abstract The plane-wave limit of AdS3 ×S3 ×S3 ×S1 is analysed for generic null-geodesics that are not necessarily BPS. For the case of pure NS-NS flux it is shown how the resulting spectrum can be reproduced as a suitable limit of the world-sheet
Externí odkaz:
https://doaj.org/article/24e0a3d32d4747c19c327e57deea8cf1