This paper integrates a quantum conception of the Planck epoch early universe with FSC model formulae and the holographic principle, to offer a reasonable explanation and solution of the cosmological constant problem....This paper integrates a quantum conception of the Planck epoch early universe with FSC model formulae and the holographic principle, to offer a reasonable explanation and solution of the cosmological constant problem. Such a solution does not appear to be achievable in cosmological models which do not integrate black hole formulae with quantum formulae such as the Stephan-Boltzmann law. As demonstrated herein, assuming a constant value of Lambda over the great span of cosmic time appears to have been a mistake. It appears that Einstein’s assumption of a constant, in terms of vacuum energy density, was not only a mistake for a statically-balanced universe, but also a mistake for a dynamically-expanding universe.展开更多
We construct a doped holographic superconductor in the Gubser–Rocha model,and realize a superconducting dome in the middle of the temperature-doping phase diagram.It is worth noting that unlike in previous research,t...We construct a doped holographic superconductor in the Gubser–Rocha model,and realize a superconducting dome in the middle of the temperature-doping phase diagram.It is worth noting that unlike in previous research,the profile of our dome shrinks inward near to zero temperature.From the numerical observation for the coupling dependence of the phase diagram,we find that the coupling between the two gauge fields plays a crucial role in the formation of the dome.We also analytically calculate the DC conductivity of the normal phase of the system in the momentum dissipation and obtain resistivity which is proportional to the temperature.The AC conductivity is calculated numerically.展开更多
In this topic review,we introduce recent developments on holographic entanglement entropy.After briefly reviewing the basic notions of entanglement in quantum information and quantum field theory,we introduce the RyuT...In this topic review,we introduce recent developments on holographic entanglement entropy.After briefly reviewing the basic notions of entanglement in quantum information and quantum field theory,we introduce the RyuTakayanagi’s prescription of computing the entanglement entropy holographically.We review the inequalities on the holographic entanglement entropy,and its derivation from Euclidean gravity.In particular,we discuss its implications in semi-classical AdS3/CFT2 correspondence,and furthermore review the recent studies on the emergence of geometry and gravity from entanglement.展开更多
文摘This paper integrates a quantum conception of the Planck epoch early universe with FSC model formulae and the holographic principle, to offer a reasonable explanation and solution of the cosmological constant problem. Such a solution does not appear to be achievable in cosmological models which do not integrate black hole formulae with quantum formulae such as the Stephan-Boltzmann law. As demonstrated herein, assuming a constant value of Lambda over the great span of cosmic time appears to have been a mistake. It appears that Einstein’s assumption of a constant, in terms of vacuum energy density, was not only a mistake for a statically-balanced universe, but also a mistake for a dynamically-expanding universe.
基金supported by the National Natural Science Foundation of China(Grant Nos.12275166,11875184,12147158 and 11805117)the NFSC-NFR joint program 12311540141.
文摘We construct a doped holographic superconductor in the Gubser–Rocha model,and realize a superconducting dome in the middle of the temperature-doping phase diagram.It is worth noting that unlike in previous research,the profile of our dome shrinks inward near to zero temperature.From the numerical observation for the coupling dependence of the phase diagram,we find that the coupling between the two gauge fields plays a crucial role in the formation of the dome.We also analytically calculate the DC conductivity of the normal phase of the system in the momentum dissipation and obtain resistivity which is proportional to the temperature.The AC conductivity is calculated numerically.
基金Supported by the Special Fund for Theoretical Physics from the Natural Science Foundations of China under Grant No.11747606National Natural Science Foundation of China under Grant Nos.11275010,11335012,11325522,and 11735001
文摘In this topic review,we introduce recent developments on holographic entanglement entropy.After briefly reviewing the basic notions of entanglement in quantum information and quantum field theory,we introduce the RyuTakayanagi’s prescription of computing the entanglement entropy holographically.We review the inequalities on the holographic entanglement entropy,and its derivation from Euclidean gravity.In particular,we discuss its implications in semi-classical AdS3/CFT2 correspondence,and furthermore review the recent studies on the emergence of geometry and gravity from entanglement.
