Abstract
We study the low-temperature low-frequency conductivity of an interacting one-dimensional electron system in the presence of a periodic potential. The conductivity is strongly influenced by conservation laws, which, we argue, need to be violated by at least two noncommuting umklapp processes to render finite. The resulting dynamics of the slow modes is studied within a memory matrix approach, and we find an exponential increase as the temperature is lowered, close to commensurate filling , , and elsewhere.
- Received 22 February 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.1092
©2000 American Physical Society