Edge exponent in the dynamic spin structure factor of the Yang-Gaudin model
Zvonarev, M. B. · Cheianov, V. V. · Giamarchi, T.
Original · EN
The dynamic spin structure factor S(k,ω) of a system of spin-1/2 bosons is investigated at arbitrary strength of interparticle repulsion. As a function of ω it is shown to exhibit a power-law singularity at the threshold frequency defined by the energy of a magnon at given k. The power-law exponent is found exactly using a combination of the Bethe Ansatz solution and an effective field theory approach.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.