10 citations · 22 across the 5 of their papers we have counts for
5 papers
Dynamical dark energy can amplify the expansion rate of the Universe
Hai-Chao Zhang
By adding a matter-coupled dark energy field to Einstein's General Relativity (GR), this paper proves that the dynamical dark energy field can change the frequency of photons from…
Obtaining a scalar fifth force for matter via a conformal coupling to the scalar field
Hai-Chao Zhang
In the framework of special relativity (SR), I propose that matter conformally couples to a scalar field through the Lagrangian density of matter, whether matter is characterized b…
Could trapped quintessence account for the laser-detuning-dependent acceleration of cold atoms in varying-frequency time-of-flight experiments?
Hai-Chao Zhang, Xin-Ping Xu, Jing-Fang Zhang +1
Using a trapped quintessence model, a series of time-of-flight (TOF) experiments with a different frequency of probe light were designed and performed. The varying-frequency TOF (V…
Obtaining a scalar fifth force via a broken-symmetry couple between the scalar field and matter
Hai-Chao Zhang
A matter-coupled scalar field model is presented in obtaining a scalar fifth force when the constraint of the current cosmological constant is satisfied. The interaction potential…
Experimental demonstration of a fifth force due to chameleon field via cold atoms
Hai-Chao Zhang
We tested a fifth force using cold atom experiments. The accelerated expansion of the universe implies the possibility of the presence of a scalar field throughout the universe dri…