Advanced search    

Search: authors:"Zoltan Bajnok"

7 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

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 ...

Truncated Hilbert space approach to the 2d ϕ 4 theory

We apply the massive analogue of the truncated conformal space approach to study the two dimensional ϕ 4 theory in finite volume. We focus on the broken phase and determine the finite size spectrum of the model numerically. We interpret the results in terms of the Bethe-Yang spectrum, from which we extract the infinite volume masses and scattering matrices for various couplings. We ...

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 ...

Finite-volume spectra of the Lee-Yang model

We consider the non-unitary Lee-Yang minimal model \( \mathrm{\mathcal{M}}\left(2,\;5\right) \) in three different finite geometries: (i) on the interval with integrable boundary conditions labelled by the Kac labels (r, s) = (1, 1), (1, 2), (ii) on the circle with periodic boundary conditions and (iii) on the periodic circle including an integrable purely transmitting defect. We ...

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 ...