부산대학교 도서관

Summary: ``The excitation spectrum of specific conformal field theories (CFTs) with central charge $c=1$ can be described in terms of quasi-particles with charges $Q=-p,\ +1$ and fractional statistics properties. Using the language of Jack polynomials, we compute form factors of the charge density operator in these CFTs. We study a form-factor expansion for the finite-temperature density-density correlation function, and find that it shows a quick convergence to the exact result. The low-temperature behaviour is recovered from a form factor with $p+1$ particles, while the high-temperature limit is recovered from states containing no more than three particles.''