We show that a scalar field without a kinetic term in the Lagrangian density, coupled to the covariant divergence of the torsion vector in the Einstein–Cartan theory of gravity, becomes kinetic in its general-relativistic equivalent formulation. The resulting kinetic term is negative: such a scalar field could be a source of phantom dark energy.

中文翻译：

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来自标量-扭转耦合的幻影暗能量

我们表明，在拉格朗日密度中没有动力学项的标量场，加上爱因斯坦-嘉当引力理论中扭转矢量的协变散度，在其广义相对论等效公式中变为动力学。由此产生的动力学项是负的：这样的标量场可能是幻影暗能量的来源。