While a scalar field with a pole in its kinetic term is often used to study the cosmological inflation, it can also play the role of dark energy, which is called the pole dark energy model. We propose a generalized model that the scalar field may have two or even multiple poles in the kinetic term and we call it the multi-pole dark energy. We find the poles can place some restrictions on the values of the original scalar field with non-canonical kinetic term. After transforming to the canonical form, we get a flat potential for the transformed new scalar field even if the original field has a steep one. It The late-time evolution of the universe is obtained explicitly for the two pole model, while dynamical analysis is performed for the multiple pole model. We find that it does have a stable attractor solution, which corresponds to the universe dominated by the potential of the scalar field.

中文翻译：

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多极暗能量

虽然在动力学项上带有极点的标量场常用于研究宇宙膨胀，但它也可以起到暗能量的作用，称为极点暗能量模型。我们提出了一个广义模型，标量场在动力学项中可能有两个甚至多个极点，我们称之为多极暗能量。我们发现极点可以对具有非规范动力学项的原始标量场的值施加一些限制。转换为规范形式后，即使原始场有陡峭的场，我们也得到了转换后的新标量场的平坦势。它对两极模型明确地获得了宇宙的后期演化，而对多极模型进行了动力学分析。我们发现它确实有一个稳定的吸引子解，