SCOAP3 Repository 20 records found  1 - 10nextSearch took 0.02 seconds. 
1. T-duality equivalences beyond string theory / Edelstein, José ; Sfetsos, Konstantinos ; Sierra-Garcia, J. ; López, Alejandro
We examine a two parameter family of gravitational actions which contains higher-derivative terms. [...]
Published in JHEP 1905 (2019) 082 10.1007/JHEP05(2019)082 arXiv:1903.05554
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2. The most general λ -deformation of CFTs and integrability / Georgiou, George ; Sfetsos, Konstantinos
We show that the CFT with symmetry group G k 1 × G k 2 × ⋯ × G k n $$ {G}_{k_1}\times {G}_{k_2}\times \cdots \times {G}_{k_n} $$ consisting of WZW models based on the same group G , but at arbitrary integer levels, admits an integrable deformation depending on 2( n − 1) continuous parameters. [...]
Published in JHEP 1903 (2019) 094 10.1007/JHEP03(2019)094 arXiv:1812.04033
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3. Weyl anomaly and the C -function in λ -deformed CFTs / Sagkrioti, Eftychia ; Sfetsos, Konstantinos ; Siampos, Konstantinos
For a general λ -deformation of current algebra CFTs we compute the exact Weyl anomaly coefficient and the corresponding metric in the couplings space geometry. [...]
Published in Nuclear Physics B 938 (2019) 426-439 10.1016/j.nuclphysb.2018.11.024
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4. Novel all loop actions of interacting CFTs: Construction, integrability and RG flows / Georgiou, George ; Sfetsos, Konstantinos
We construct the all loop effective action representing, for small couplings, simultaneously self- and mutually interacting current algebra CFTs realized by WZW models. [...]
Published in Nuclear Physics B 937 (2018) 371-393 10.1016/j.nuclphysb.2018.10.018
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5. Non-Abelian T-duality and modular invariance / Fraser, Benjo ; Manolopoulos, Dimitrios ; Sfetsos, Konstantinos
Two-dimensional σ -models corresponding to coset CFTs of the type (gˆk⊕hˆℓ)/hˆk+ℓ admit a zoom-in limit involving sending one of the levels, say ℓ , to infinity. [...]
Published in Nuclear Physics B (2018) 10.1016/j.nuclphysb.2018.07.017
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6. T-duality and high-derivative gravity theories: the BTZ black hole/string paradigm / Edelstein, José ; Sfetsos, Konstantinos ; Sierra-Garcia, J. ; López, Alejandro
We show that the temperature and entropy of a BTZ black hole are invariant under T-duality to next to leading order in M ⋆ − 2 , M ⋆ being the scale suppressing higher-curvature/derivative terms in the Lagrangian. [...]
Published in JHEP 1806 (2018) 142 10.1007/JHEP06(2018)142 arXiv:1803.04517
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7. The exact C -function in integrable λ -deformed theories / Georgiou, George ; Panopoulos, Pantelis ; Sagkrioti, Eftychia ; Sfetsos, Konstantinos ; et al
By employing CFT techniques, we show how to compute in the context of λ -deformations of current algebras and coset CFTs the exact in the deformation parameters C -function for a wide class of integrable theories that interpolate between a UV and an IR point. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.06.023
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8. Penrose limits of Abelian and non-Abelian T-duals of AdS 5 × S 5 and their field theory duals / Itsios, Georgios ; Nastase, Horatiu ; Núñez, Carlos ; Sfetsos, Konstantinos ; et al
We consider the backgrounds obtained by Abelian and non-Abelian T-duality applied on AdS 5 × S 5 . [...]
Published in JHEP 1801 (2018) 071 10.1007/JHEP01(2018)071 arXiv:1711.09911
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9. Integrable deformations of the Gk1×Gk2/Gk1+k2 coset CFTs / Sfetsos, Konstantinos ; Siampos, Konstantinos
We study the effective action for the integrable λ -deformation of the Gk1×Gk2/Gk1+k2 coset CFTs. [...]
Published in Nuclear Physics B (2017) 10.1016/j.nuclphysb.2017.12.011
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10. Integrable flows between exact CFTs / Georgiou, George ; Sfetsos, Konstantinos
We explicitly construct families of integrable σ -model actions smoothly inter-polating between exact CFTs. [...]
Published in JHEP 1711 (2017) 078 10.1007/JHEP11(2017)078 arXiv:1707.05149
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2 Sfetsos, K.
7 Sfetsos, Konstadinos
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