Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-06-10
Phys. Rev. Lett. 103, 216602 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, published version
Scientific paper
10.1103/PhysRevLett.103.216602
It has been conjectured that transport in integrable one-dimensional (1D) systems is necessarily ballistic. The large diffusive response seen experimentally in nearly ideal realizations of the S=1/2 1D Heisenberg model is therefore puzzling and has not been explained so far. Here, we show that, contrary to common belief, diffusion is universally present in interacting 1D systems subject to a periodic lattice potential. We present a parameter-free formula for the spin-lattice relaxation rate which is in excellent agreement with experiment. Furthermore, we calculate the current decay directly in the thermodynamic limit using a time-dependent density matrix renormalization group algorithm and show that an anomalously large time scale exists even at high temperatures.
Affleck Ian
Pereira Rodrigo G.
Sirker Jesko
No associations
LandOfFree
Diffusion and ballistic transport in one-dimensional quantum systems 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 Diffusion and ballistic transport in one-dimensional quantum systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffusion and ballistic transport in one-dimensional quantum systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-207550