Supersymmetric approximations to the 3D supersymmetric O ( N ) model
Supersymmetric approximations to the 3D supersymmetric O ( N ) model
复制标题
3D 超对称 O ( N ) 模型的超对称近似
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Fred Cooper
中科院分区：
文献类型：
--
作者：
J. Dawson;B. Mihaila;Per Berglund;Fred Cooper
为了研究保持超对称性的超对称O(N)模型动力学，我们提出了几个非微扰近似。我们研究了大n近似和Hartree近似中真空的领先阶相结构，并导出了有限温度重正化有效势。我们推导了超场格林函数的精确Schwinger-Dyson方程，并利用这些方程的截断发展了在大n近似中超越下一阶的机制，这些方程也可以从两粒子不可约有效作用中推导出来。
We develop several nonperturbative approximations for studying the dynamics of a supersymmetric O(N) model which preserve supersymmetry. We study the phase structure of the vacuum in both the leading order in large-N approximation as well as in the Hartree approximation, and derive the finite temperature renormalized effective potential. We derive the exact Schwinger-Dyson equations for the superfield Green functions and develop the machinery for going beyond the next to leading order in large-N approximation using a truncation of these equations which can also be derived from a two-particle irreducible effective action.