Broadening quantum cosmology with a fractional whirl

局部短时加速导致的光谱线展宽及其在宇宙学中的可能推论

Local Short-Time Acceleration induced Spectral Line Broadening and Possible Implications in Cosmology

本文提出局部短时加速会导致光谱线展宽而中心值不变的效应，该效应为理解宇宙加速膨胀和旋转星系径向加速差异提供了统一视角。

Dust time in quantum cosmology

We give a formulation of quantum cosmology with a pressureless dust and arbitrary additional matter fields. The dust provides a natural time gauge corresponding to a cosmic time, yielding a physical time independent Hamiltonian. The approach simplifies the analysis of both Wheeler-deWitt and loop quantum cosmology models, broadening the applicability of the latter.

Cosmology as `Condensed Matter' Physics

We note that in general there exist two basic aspects in any branch of physics, including cosmology - one dealing with the attributes of basic constituents and forces of nature, the other dealing with how structures arise from them and how they evolve. Current research in quantum and superstring cosmology is directed mainly towards the first aspect, even though a viable theory of the underlying interactions is lacking. We call the attention to the development of the second aspect, i.e., on the organization and processing of the basic constituents of matter (in classical cosmology) and spacetim…