6 papers
Shadows of rotating Hayward-de Sitter black holes with astrometric observables
Peng-Zhang He, Qi-Qi Fan, Hao-Ran Zhang +1
Motivated by recent work on rotating black hole shadow [Phys. Rev. D101, 084029 (2020)], we investigate the shadow behaviors of rotating Hayward-de Sitter black hole for static obs…
The cosmological constant from space-time discreteness
Qi-Qi Fan, Cong Li, Hao-Ran Zhang +2
We regard the background of space-time as a physical system composed of discrete volume elements at the Planck scale and get the internal energy of space-time by Debye model. A tem…
Optical properties of a Brane-World black hole as photons couple to the Weyl tensor
He-Xu Zhang, Cong Li, Peng-Zhang He +2
In this article, we have investigated the equations of motion of the photons coupled to Weyl tensor by the geometric optics approximation and the corresponding shadow in a Brane-Wo…
Practical and reliable error bars for quantum process tomography
Le Phuc Thinh, Philippe Faist, Jonas Helsen +2
Current techniques in quantum process tomography typically return a single point estimate of an unknown process based on a finite albeit large amount of measurement data. Due to st…
The evolution of universe in the two-scalar theory
Jia-Cheng Ding, Ping Li, Cong Li +2
We generalize f(R,T) gravity into the two-scalar theory that includes two independent scalar fields by the variational method, and we derive its field equations in Einstein frame u…
Apparent horizon and gravitational thermodynamics of Universe in the Eddington-Born-Infeld theory
Jia-Cheng Ding, Qi-Qi Fan, Cong Li +2
The thermodynamics of Universe in the Eddington-Born-Infeld (EBI) theory was restudied by utilizing the holographic-style gravitational equations that dominate the dynamics of the…