We investigate the effective resistance Rn and conductance Cn between the root and leaves of a binary tree of height n. In this electrical network, the resistance of each edge e at distance d from the root is defined by re=2dXe where the Xe are i.i.d. positive random variables bounded away from zero and infinity. It is shown that ERn=nEXe−(Var (Xe)/EXe)ln n+O(1) and Var (Rn)=O(1). Moreover, we establish sub-Gaussian tail bounds for Rn. We also discuss some possible extensions to supercritical Galton–Watson trees.
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References
[1] Addario-Berry, L. and Reed, B. A. (2009). Minima in branching random walks. Ann. Probab. To appear.
[2] Athreya, K. B. and Ney, P. E. (1972). Branching Processes. Springer, Berlin.
Mathematical Reviews (MathSciNet):
MR373040
[3] Barndorff-Nielsen, O. E. (1994). A note on electrical networks and the inverse Gaussian distribution. Adv. in Appl. Probab. 26 63–67.
[4] Barndorff-Nielsen, O. E. and Koudou, A. E. (1998). Trees with random conductivities and the (reciprocal) inverse Gaussian distribution. Adv. in Appl. Probab. 30 409–424.
[5] Benjamini, I. and Rossignol, R. (2008). Submean variance bound for effective resistance on random electric networks. Comm. Math. Phys. 280 445–462.
[6] Benjamini, I., Kalai, G. and Schramm, O. (2003). First passage percolation has sublinear distance variance. Ann. Probab. 31 1970–1978.
[7] Boucheron, S., Bousquet, O., Lugosi, G. and Massart, P. (2005). Moment inequalities for functions of independent random variables. Ann. Probab. 33 514–560.
[8] de Bruijn, N. G. (1981). Asymptotic Methods in Analysis, 3rd ed. Dover Publications, New York.
Mathematical Reviews (MathSciNet):
MR671583
[9] Doyle, P. G. and Snell, J. L. (1984). Random Walks and Electric Networks. Carus Mathematical Monographs 22. Mathematical Association of America, Washington, DC.
Mathematical Reviews (MathSciNet):
MR920811
[10] Efron, B. and Stein, C. (1981). The jackknife estimate of variance. Ann. Statist. 9 586–596.
Mathematical Reviews (MathSciNet):
MR615434
[11] Falik, D. and Samorodnitsky, A. (2007). Edge-isoperimetric inequalities and influences. Combin. Probab. Comput. 16 693–712.
[12] Flajolet, P. and Odlyzko, A. (1982). The average height of binary trees and other simple trees. J. Comput. System Sci. 25 171–213.
Mathematical Reviews (MathSciNet):
MR680517
[13] Lyons, R. (1990). Random walks and percolation on trees. Ann. Probab. 18 931–958.
[14] Lyons, R. and Pemantle, R. (1992). Random walk in a random environment and first-passage percolation on trees. Ann. Probab. 20 125–136.
[15] Lyons, R. and Peres, Y. (2006). Probability on Trees and Networks. Cambridge Univ. Press, Cambridge.
[16] Lyons, R., Pemantle, R. and Peres, Y. (1997). Unsolved problems concerning random walks on trees. In Classical and Modern Branching Processes (Minneapolis, MN, 1994). The IMA Volumes in Mathematics and Its Applications 84 223–237. Springer, New York.
[17] Pemantle, R. (1988). Phase transition in reinforced random walk and RWRE on trees. Ann. Probab. 16 1229–1241.
Mathematical Reviews (MathSciNet):
MR942765
[18] Peres, Y. (1999). Probability on trees: An introductory climb. In Lectures on Probability Theory and Statistics (Saint-Flour, 1997). Lecture Notes in Mathematics 1717 193–280. Springer, Berlin.
[19] Soardi, P. M. (1994). Potential Theory on Infinite Networks. Lecture Notes in Mathematics 1590. Springer, Berlin.
[20] Steele, J. M. (1986). An Efron–Stein inequality for nonsymmetric statistics. Ann. Statist. 14 753–758.
Mathematical Reviews (MathSciNet):
MR840528