Results 61 to 70 of about 44,906 (151)

Current-current deformations, conformal integrals and correlation functions

Journal of High Energy Physics, 2020
Motivated by the recent work on T T ¯ $$ T\overline{T} $$ -type deformations of 2D CFTs, a especial class of single-trace deformations of AdS3/CFT2 correspondence has been investigated.
Gaston Giribet, Matias Leoni
doaj   +1 more source

Measuring Small Distances in N=2 Sigma Models

, 1993
We analyze global aspects of the moduli space of K\"ahler forms for $N$=(2,2) conformal $\sigma$-models. Using algebraic methods and mirror symmetry we study extensions of the mathematical notion of length (as specified by a K\"ahler structure) to ...
Alekseevskaya, Aspinwall, Aspinwall, Aspinwall, Aspinwall, Batyrev, Batyrev, Batyrev, Batyrev, Berglund, Billera, Blau, Brian R. Greene, Callan, Candelas, Candelas, Candelas, Candelas, Candelas, Candelas, Candelas, Candelas, Cox, Cvetič, David R. Morrison, Dine, Dine, Distler, Freedman, Friedan, Gel'fand, Gel'fand, Gel'fand, Gepner, Gradshteyn, Green, Greene, Greene, Gromov, Gross, Hübsch, Iwasaki, Kikkawa, Lerche, Martinec, McDuff, Morrison, Morrison, Morrison, Oda, Paul S. Aspinwall, Sakai, Slater, Strominger, Vafa, Vafa, Witten, Witten, Witten, Witten, Zumino   +60 more
core   +2 more sources

Bulk-induced D-brane deformations and the string coupling constant

Journal of High Energy Physics
We consider computing the on-shell disk action of open-closed string field theory as a gauge-invariant way of capturing the shift in D-brane tension that is induced by a deformation of the bulk CFT.
Carlo Maccaferri, Alberto Ruffino, Jakub Vošmera   +2 more
doaj   +1 more source

Nonreductive WZW models and their CFTs

, 1995
We study two-dimensional WZW models with target space a nonreductive Lie group. Such models exist whenever the Lie group possesses a bi-invariant metric.
Antoniadis, Drinfel'd, Figueroa-O'Farfill, Figueroa-O'Farrill, Figueroa-O'Farrill, Gawedzki, Gawedzki, Gurarie, Horowitz, Hull, Hull, Isidro, Jack, Jose M. Figueroa-O'Farrill, Karabali, Karabali, Kazama, Kehagias, Klimčík, Koszul, Lian, Lian, Medina, Mohammedi, Mohammedi, Polyakov, Polyakov, Sfetsos, Sfetsos, Sfetsos, Sonia Stanciu, Spiegelglas, Tseytlin, Wess, Witten, Witten, Witten   +36 more
core   +1 more source

2d small N=4 Long-multiplet superconformal block

Journal of High Energy Physics, 2019
We study 2d N=4 superconformal field theories, focusing on its application on numerical bootstrap study. We derive the superconformal block by utilizing the global part of the super Virasoro algebra and set up the crossing equations for the non-BPS long ...
Filip Kos, Jihwan Oh
doaj   +1 more source

Two-loop conformal invariance for Yang-Baxter deformed strings

Journal of High Energy Physics, 2020
The so-called homogeneous Yang-Baxter (YB) deformations can be considered a non-abelian generalization of T-duality-shift-T-duality (TsT) transformations. TsT transformations are known to preserve conformal symmetry to all orders in α′.
Riccardo Borsato, Linus Wulff
doaj   +1 more source

T-duality, Quotients and Currents for Non-Geometric Closed Strings

, 2015
We use the canonical description of T-duality as well as the formulation of T-duality in terms of chiral currents to investigate the geometric and non-geometric faces of closed string backgrounds originating from principal torus bundles with constant H ...
Bakas, Ioannis, Lust, Dieter
core   +1 more source

Holographic boundary conformal field theory within Horndeski gravity

Journal of High Energy Physics
We investigate entanglement islands and the Page curve in the framework of Horndeski gravity on a Karch-Randall braneworld background. In particular, treating the holographic boundary conformal field theory analytically we find that the Horndeski ...
Fabiano F. Santos, Behnam Pourhassan, Emmanuel N. Saridakis, Oleksii Sokoliuk, Alexander Baransky, Emre Onur Kahya   +5 more
doaj   +1 more source

Condensates and Singularities in String Theory

, 1993
We derive a class of solutions to the string sigma-model equations for the closed bosonic string. The tachyon field is taken to form a constant condensate and the beta-function equations at one-loop level are solved for the evolution of the metric and ...
Antoniadis, Antoniadis, Antoniadis, Banks, Bars, Brustein, Callan, Callan, Callan, Das, de Alwis, Feigin, Fradkin, Ginsparg, Kaku, Kostelecký, Kostelecký, Kostelecký, Kostelecký, Kugo, Kugo, Lovelace, Malcolm J. Perry, Nappi, Nemeschansky, Polchinski, Saadi, Siegel, Siegel, Siegel, Thierry-Mieg, Thorn, Tseytlin, V.Alan Kostelecký, Wess, Witten, Witten   +36 more
core   +1 more source

String duality transformations in $f(R)$ gravity from Noether symmetry approach

, 2016
We select $f(R)$ gravity models that undergo scale factor duality transformations. As a starting point, we consider the tree-level effective gravitational action of bosonic String Theory coupled with the dilaton field.
Capozziello, Salvatore, Gionti, S. J. Gabriele, Vernieri, Daniele   +2 more
core   +3 more sources