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arXiv quant-ph/0403223quant-ph
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能量相关哈密顿量的线性表示

Linear representation of energy-dependent Hamiltonians

Miloslav Znojil

摘要:

有效(即,子空间约束的)哈密顿量通过构造而变为能量依赖的,而所有能量依赖的力证明为非线性的,因为能量本身仅仅是哈密顿量H的本征值。通过引入H=H(E)的左作用和右作用的两个独立的线性表示,提出了解决这一难题的最自然的方法之一。这两个新的能量无关的运营商是非厄米特,使形式主义承认一个自然的扩展到非厄米特初始H(E)。

英文摘要:

Effective (i.e., subspace-constrained) Hamiltonians become, by construction, energy-dependent while all the energy-dependent forces prove non-linear because the energy itself is merely an eigenvalue of the Hamiltonian H. One of the most natural resolutions of such a puzzle is proposed via an introduction of teh two separate linear representatives of the respective right and left action of H=H(E). Both the new energy-independent operators are non-Hermitian so that the formalism admits a natural extension to non-Hermitian initial H(E)s.

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