Critical behavior of sandpile models with sticky grains

被引:13
|
作者
Mohanty, P. K.
Dhar, Deepak
机构
[1] Saha Inst Nucl Phys, TCMP Div, Kolkata 700064, W Bengal, India
[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
关键词
self-organized criticality; sandpile models; directed percolation;
D O I
10.1016/j.physa.2007.04.117
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We revisit the question whether the critical behavior of sandpile models with sticky grains is in the directed percolation universality class. Our earlier theoretical arguments in favor, supported by evidence from numerical simulations [P.K. Mohanty, D. Dhar, Phys. Rev. Lett. 89 (2002) 1043031, have been disputed by Bonachela et a]. [Phys. Rev. E 74 (2006) 050102] for sandpiles with no preferred direction. We discuss possible reasons for the discrepancy. Our new results of longer simulations of the one-dimensional undirected model fully support our earlier conclusions. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:34 / 38
页数:5
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