Domain wall delocalization,dynamics and fluctuations in an exclusion process with two internal states |
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Authors: | T Reichenbach T Franosch E Frey |
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Institution: | 1.Arnold Sommerfeld Center for Theoretical Physics (ASC) and Center for NanoScience (CeNS), Department of Physics,Ludwig-Maximilians-Universit?t München,München,Germany |
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Abstract: | We investigate the delocalization transition appearing in an exclusion process with two internal states, respectively on two
parallel lanes. At the transition, delocalized domain walls form in the density profiles of both internal states, in agreement
with a mean-field approach. Remarkably, the topology of the system’s phase diagram allows for the delocalization of a (localized)
domain wall when approaching the transition. We quantify the domain wall’s delocalization close to the transition by analytic
results obtained within the framework of the domain wall picture. Power law dependences of the domain wall width on the distance
to the delocalization transition as well as on the system size are uncovered, they agree with numerical results. |
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Keywords: | PACS" target="_blank">PACS 05 40 -a Fluctuation phenomena random processes noise and Brownian motion 05 60 -k Transport processes 64 60 -i General studies of phase transitions 72 25 -b Spin polarized transport |
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