Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-07-16
Phys. Rev. B 74, 014433 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
18 PRB pages added corrections
Scientific paper
10.1103/PhysRevB.74.014433
We present a detailed study of the finite temperature dynamical properties of the quantum Potts model in one dimension.Quasiparticle excitations in this model have internal quantum numbers, and their scattering matrix {\gf deep} in the gapped phases is shown to take a simple {\gf exchange} form in the perturbative regimes. The finite temperature correlation functions in the quantum critical regime are determined using conformal invariance, while {\gf far from the quantum critical point} we compute the decay functions analytically within a semiclassical approach of Sachdev and Damle [K. Damle and S. Sachdev, Phys. Rev. B \textbf{57}, 8307 (1998)]. As a consequence, decay functions exhibit a {\em diffusive character}. {\gf We also provide robust arguments that our semiclassical analysis carries over to very low temperatures even in the vicinity of the quantum phase transition.} Our results are also relevant for quantum rotor models, antiferromagnetic chains, and some spin ladder systems.
Rapp Akos
Zarand Gergely
No associations
LandOfFree
Dynamical correlations and quantum phase transition in the quantum Potts model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamical correlations and quantum phase transition in the quantum Potts model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical correlations and quantum phase transition in the quantum Potts model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-453498