title: Power-law behavior in the power spectrum induced by Brownian motion of a domain wall.
abstract: We show that Brownian motion of a one-dimensional domain wall in a large but finite system yields a omega(-3/2) power spectrum. This is successfully applied to the totally asymmetric simple exclusion process with open boundaries. An excellent agreement between our theory and numerical results is obtained in a frequency range where the domain wall motion dominates and the discreteness of the system is not effective.
authors.affiliation: Faculty of Integrated Human Studies, Kyoto University, Kyoto 606-8501, Japan. takesue@phys.h.kyoto-u.ac.jp
authors.forename: Shinji
authors.initials: S
authors.lastname: Takesue
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Mitsudo
authors.forename: Hisao
authors.initials: H
authors.lastname: Hayakawa