Scalar quantum field theory in disordered media

被引：13
|
作者：
Arias, E. [1 ]
Goulart, E. [1 ]
Krein, G. [2 ]
Menezes, G. [2 ]
Svaiter, N. F. [1 ]
机构：
[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
[2] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil
来源：
PHYSICAL REVIEW D | 2011年 / 83卷 / 12期
基金：
巴西圣保罗研究基金会;
关键词：
GINZBURG-LANDAU MODEL; LIGHT-CONE FLUCTUATIONS; SPIN-GLASS; WAVE-PROPAGATION; RENORMALIZATION; SPACETIMES; GRAVITONS; ANALOG;
D O I：
10.1103/PhysRevD.83.125022
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A free massive scalar field in inhomogeneous random media is investigated. The coefficients of the Klein-Gordon equation are taken to be random functions of the spatial coordinates. The case of a disordered medium modeled by centered stationary and Gaussian processes is analyzed. After performing the averages over the random functions, we obtain the two-point and the four-point Green's functions of the model up to one loop. The disordered scalar quantum field theory becomes qualitatively similar to a lambda phi(4) self-interacting theory with a frequency-dependent coupling.
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收藏
页数：11
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