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research article

Metastable densities for the contact process on power law random graphs

Mountford, Thomas  
•
Valesin, Daniel
•
Yao, Qiang
2013
Electronic Journal Of Probability

We consider the contact process on a random graph with a fixed degree distribution given by a power law. We follow the work of Chatterjee and Durrett [2], who showed that for arbitrarily small infection parameter lambda, the survival time of the process is larger than a stretched exponential function of the number of vertices. For lambda close to 0 (that is, "near criticality"), we obtain sharp bounds for the typical density of infected sites in the graph, as the number of vertices tends to infinity. We exhibit three different regimes for this density, depending on the tail of the degree law.

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Type
research article
DOI
10.1214/EJP.v18-2512
Web of Science ID

WOS:000328081700001

Author(s)
Mountford, Thomas  
Valesin, Daniel
Yao, Qiang
Date Issued

2013

Publisher

Univ Washington, Dept Mathematics

Published in
Electronic Journal Of Probability
Volume

18

Start page

1

End page

36

Subjects

Contact process

•

random graphs

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
PRST  
Available on Infoscience
January 9, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/99197
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