论文标题
非产素重力的延伸和宇宙常数
Extension of unimodular gravity and the cosmological constant
论文作者
论文摘要
提出了一种新方法来取消宇宙常数。该提案涉及指标的决定因素，该决定因素充当一种自我调整的$ q $ field，而无需微调的化学潜力。由于该度量的决定因素现在在物理学中起作用，因此允许的坐标转换仅限于具有雅各布单位的人。因此，宇宙学恒定问题的这种方法类似于先前文献的单型重力方法。已经研究了所得的宇宙学，并获得的结果表明，如果包括量子 - 触及效应，则自然取消了初始宇宙常数。
A new way is proposed to cancel the cosmological constant. The proposal involves the metric determinant acting as a type of self-adjusting $q$-field without need of a fine-tuned chemical potential. Since the determinant of the metric now plays a role in the physics, the allowed coordinate transformations are restricted to those with unit Jacobian. This approach to the cosmological constant problem is, therefore, similar to the unimodular-gravity approach of the previous literature. The resulting cosmology has been studied and the obtained results show the natural cancellation of an initial cosmological constant if quantum-dissipative effects are included.
