Phase diagram of the lattice Wess-Zumino model from rigorous lower bounds on the energy
Phase diagram of the lattice Wess-Zumino model from rigorous lower bounds on the energy
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来自严格能量下界的晶格 Wess-Zumino 模型的相图
DOI：
10.1103/physrevd.70.035011
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发表时间：
2004
影响因子：
5
通讯作者：
A. Feo
中科院分区：
文献类型：
--
作者：
M. Beccaria;M. Campostrini;G. D. Angelis;A. Feo
We study the lattice $N=1$ Wess-Zumino model in two dimensions and we construct a sequence ${\ensuremath{\rho}}^{(L)}$ of exact lower bounds on its ground-state energy density $\ensuremath{\rho},$ converging to $\ensuremath{\rho}$ in the limit $\stackrel{\ensuremath{\rightarrow}}{L}\ensuremath{\infty}.$ The bounds ${\ensuremath{\rho}}^{(L)}$ can be computed numerically on a finite lattice with L sites and can be exploited to discuss dynamical symmetry breaking. The transition point is determined and compared with recent results based on large-scale Green function Monte Carlo simulations with good agreement.
We study the lattice $N=1$ Wess-Zumino model in two dimensions and we construct a sequence ${\ensuremath{\rho}}^{(L)}$ of exact lower bounds on its ground-state energy density $\ensuremath{\rho},$ converging to $\ensuremath{\rho}$ in the limit $\stackrel{\ensuremath{\rightarrow}}{L}\ensuremath{\infty}.$ The bounds ${\ensuremath{\rho}}^{(L)}$ can be computed numerically on a finite lattice with L sites and can be exploited to discuss dynamical symmetry breaking. The transition point is determined and compared with recent results based on large-scale Green function Monte Carlo simulations with good agreement.