arXiv subjects

H. M. Babujian

Publications and source records attributed to H. M. Babujian.

3 recordsLinked to original sources

arXiv2016

Multipoint Green's functions in 1+1 dimensional integrable quantum field theories

We calculate the multipoint Green functions in 1+1 dimensional integrable quantum field theories. We use the crossing formula for general models and calculate the 3 and 4 point functions taking in to account only the lower nontrivial intermediate states contributions. Then we apply the general results to the examples of the scaling $Z_{2}$ Ising model, sinh-Gordon model and $Z_{3}$ scaling Ising model. We demonstrate this calculations explicitly. The results can be applied to physical phenomena as for example to the Raman scattering.

hep-th↗

arXiv2016

Probing Strong Correlations with Light Scattering: the Example of the Quantum Ising model

In this paper we calculate the nonlinear susceptibility and the resonant Raman cross section for the paramagnetic phase of the ferromagnetic Quantum Ising model in one dimension. In this region the spectrum of the Ising model has a gap $m$. The Raman cross section has a strong singularity when the energy of the outgoing photon is at the spectral gap $ω_{f} \approx m$ and a square root threshold when the frequency difference between the incident and outgoing photons $ω_{i} -ω_{f} \approx 2m$. The latter feature reflects the fermionic nature of the Ising model excitations.

cond-mat.other↗

arXiv1993

Off-Shell Bethe Ansatz Equation for Gaudin Magnets and Solutions of Knizhnik-Zamolodchikov Equations

We generalize the previously established connection between the off-shell Bethe ansatz equation for inhomogeneous SU(2) lattice vertex models in the quasiclassical limit and the solutions of the SU(2) Knizhnik-Zamolodchikov equations to the case of arbitrary simple Lie algebras.

hep-th↗