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From the octagon to the SFT vertex — gluing and multiple wrapping

We compare various ways of decomposing and decompactifying the string field theory vertex and analyze the relations between them. We formulate axioms for the octagon and show how it can be glued to reproduce the decompactified pp-wave SFT vertex which in turn can be glued to recover the exact finite volume pp-wave Neumann coefficients. The gluing is performed by resumming multiple ...

Classical limit of diagonal form factors and HHL correlators

We propose an expression for the classical limit of diagonal form factors in which we integrate the corresponding observable over the moduli space of classical solutions. In infinite volume the integral has to be regularized by proper subtractions and we present the one, which corresponds to the classical limit of the connected diagonal form factors. In finite volume the integral ...

Quasinormal modes and the phase structure of strongly coupled matter

We investigate the poles of the retarded Green’s functions of strongly coupled field theories exhibiting a variety of phase structures from a crossover up to different first order phase transitions. These theories are modeled by a dual gravitational description. The poles of the holographic Green’s functions appear at the frequencies of the quasinormal modes of the dual black hole ...

The kinematical AdS5 × S5 Neumann coefficient

For the case of two particles a solution of the string field theory vertex axioms can be factorized into a standard form factor and a kinematical piece which includes the dependence on the size of the third string. In this paper we construct an exact solution of the kinematical axioms for AdS 5 × S 5 which includes all order wrapping corrections w.r.t. the size of the third string. ...

String field theory vertex from integrability

We propose a framework for computing the (light cone) string field theory vertex in the case when the string worldsheet QFT is a generic integrable theory. The prime example and ultimate goal would be the AdS 5 × S 5 superstring theory cubic string vertex and the chief application will be to use this framework as a formulation for \( \mathcal{N}=4 \) SYM theory OPE coefficients ...

Conformal defects in supergravity — backreacted Dirac delta sources

the Dirac delta sources is presented. The physics of defect configurations is illustrated with a calculation of entanglement entropy. Romuald A; Janik; Jakub Jankowski and Piotr Witkowski 1

Twist-two operators and the BFKL regime — nonstandard solutions of the Baxter equation

Romuald A. Janik 0 0 Institute of Physics, Jagiellonian University , ul. Reymonta 4, 30-059 Kraokw, Poland The link between BFKL physics and twist-two operators involves an analytical continuation

HHL correlators, orbit averaging and form factors

We argue that the conventional method to calculate the OPE coefficients in the strong coupling limit for heavy-heavy-light operators in the \( \mathcal{N} \) = 4 Super-Yang-Mills theory has to be modified by integrating the light vertex operator not only over a single string worldsheet but also over the moduli space of classical solutions corresponding to the heavy states. This ...

Approaching the BFKL pomeron via integrable classical solutions

Romuald A. Janik 0 Pawel Laskos-Grabowski 0 0 Institute of Physics, Jagiellonian University , ul. Reymonta 4, 30-059 Krakow, Poland We identify classical string solutions which directly give the

Six and seven loop Konishi from Lüscher corrections

Zoltan Bajnok 1 Romuald A. Janik 0 0 Institute of Physics, Jagiellonian University , ul. Reymonta 4, 30-059 Krakow, Poland 1 MTA Lendulet Holographic QFT Group, Wigner Research Centre , H-1525

Review of AdS/CFT Integrability, Chapter III.5: Lüscher Corrections

ROMUALD A. JANIK 0 0 Institute of Physics, Jagiellonian University , ul. Reymonta 4, 30-059 Krakow, Poland In integrable quantum field theories, the large volume spectrum is given by the Bethe

Correlation functions of three heavy operators — the AdS contribution

Romuald A. Janik 0 Andrzej Wereszcznyski 0 0 Institute of Physics, Jagiellonian University , ul. Reymonta 4, 30-059 Kraokw, Poland We consider operators in N = 4 SYM theory which are dual, at

Janus black holes

In this paper Janus black holes in A dS 3 are considered. These are static solutions of an Einstein-scalar system with broken translation symmetry along the horizon. These solutions are dual to interface conformal field theories at finite temperature. An approximate solution is first constructed using perturbation theory around a planar BTZ blackhole. Numerical and exact solutions ...