Applying the linear δ expansion to theiφ3interaction

Applying the linear δ expansion to theiφ3interaction
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将线性 δ 展开应用于它们的 φ3 相互作用

DOI:
10.1103/physrevd.57.5092
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发表时间:
1997
期刊:
影响因子:
5
通讯作者:
A. P. Korte
A. P. Korte
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Blencowe;H. Jones;A. P. Korte

文献摘要

被引文献

相似文献

将线性展开(LDE)应用于统计力学中Lee-Yang零点研究中的哈密顿量$H=(p^2+m^2 x^2)/2+igx^3$。尽管这个哈密顿量不是厄米特的,但它似乎拥有一个真正的正光谱。在LDE中,正如在微扰理论中一样,本征值自然是实的,因此对这一性质的证明取决于展开式的收敛。对于零维的$ix^3$势,给出了修正形式的LDE的一个收敛证明。然后将零维方法推广到量子力学,在量子力学中我们提供了收敛的数值证据。
The linear $\delta$ expansion (LDE) is applied to the Hamiltonian $H=(p^2 +m^2 x^2)/2 + igx^3$, which arises in the study of Lee-Yang zeros in statistical mechanics. Despite being non-Hermitian, this Hamiltonian appears to possess a real, positive spectrum. In the LDE, as in perturbation theory, the eigenvalues are naturally real, so a proof of this property devolves on the convergence of the expansion. A proof of convergence of a modified version of the LDE is provided for the $ix^3$ potential in zero dimensions. The methods developed in zero dimensions are then extended to quantum mechanics, where we provide numerical evidence for convergence.