PMID- 22181082
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20120612
LR  - 20111220
IS  - 1550-2376 (Electronic)
IS  - 1539-3755 (Linking)
VI  - 84
IP  - 4 Pt 1
DP  - 2011 Oct
TI  - Driven k-mers: correlations in space and time.
PG  - 041102
AB  - Steady-state properties of hard objects with exclusion interaction and a driven 
      motion along a one-dimensional periodic lattice are investigated. The process is 
      a generalization of the asymmetric simple exclusion process (ASEP) to particles 
      of length k, and is called the k-ASEP. Here, we analyze both static and dynamic 
      properties of the k-ASEP. Density correlations are found to display interesting 
      features, such as pronounced oscillations in both space and time, as a 
      consequence of the extended length of the particles. At long times, the density 
      autocorrelation decays exponentially in time, except at a special k-dependent 
      density when it decays as a power law. In the limit of large k at a finite 
      density of occupied sites, the appropriately scaled system reduces to a 
      nonequilibrium generalization of the Tonks gas describing the motion of hard rods 
      along a continuous line. This allows us to obtain in a simple way the known 
      two-particle distribution for the Tonks gas. For large but finite k, we also 
      obtain the leading-order correction to the Tonks result.
FAU - Gupta, Shamik
AU  - Gupta S
AD  - Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi 
      Bhabha Road, Mumbai 400005, India.
FAU - Barma, Mustansir
AU  - Barma M
FAU - Basu, Urna
AU  - Basu U
FAU - Mohanty, P K
AU  - Mohanty PK
LA  - eng
PT  - Journal Article
DEP - 20111003
PL  - United States
TA  - Phys Rev E Stat Nonlin Soft Matter Phys
JT  - Physical review. E, Statistical, nonlinear, and soft matter physics
JID - 101136452
EDAT- 2011/12/21 06:00
MHDA- 2011/12/21 06:01
CRDT- 2011/12/21 06:00
PHST- 2011/06/20 00:00 [received]
PHST- 2011/08/14 00:00 [revised]
PHST- 2011/12/21 06:00 [entrez]
PHST- 2011/12/21 06:00 [pubmed]
PHST- 2011/12/21 06:01 [medline]
AID - 10.1103/PhysRevE.84.041102 [doi]
PST - ppublish
SO  - Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Oct;84(4 Pt 1):041102. doi: 
      10.1103/PhysRevE.84.041102. Epub 2011 Oct 3.