We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be ...We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be provided by, for example, experts on information theory （as we are）. Our previous efforts in this direction led to a fascinating result： the theoretical total mass ofa spacetime in which Planck＇s length is an observer-independent scale of length is equal （both in expression and value） to the mass of our portion of Universe measured by national aeronautics and space administration wilkinson microwave anisotropy probe （NASA WMAP） spacecraft. In the following paragraphs we＇ll show how granularity （i.e., discontinuity） of physical entities of our portion of observable spacetime descends directly from the principles of information theory, and how a physical theory about the discontinuity of reality built on these basis can lead to an elegant descriptions of both microcosm and macrocosm.展开更多
We study the quantization of the Einstein-Hilbert action for a small true vacuum bubble without matter or scalar field. The quan- tization of action induces an extra term of potential called quantum potential in Hamil...We study the quantization of the Einstein-Hilbert action for a small true vacuum bubble without matter or scalar field. The quan- tization of action induces an extra term of potential called quantum potential in Hamilton-Jacobi equation, which gives expanding solutions, including the exponential expansion solutions of the scalar factor a for the bubble. We show that exponential expansion of the bubble continues with a short period, no matter whether the bubble is closed, fiat, or open. The exponential expansion ends spontaneously when the bubble becomes large, that is, the scalar factor a of the bubble approaches a Planck length lp. We show that it is the quantum potential of the small true vacuum bubble that plays the role of the scalar field potential suggested in the slow-roll inflation model. With the picture of quantum tunneling, we calculate particle creation rate during inflation, which shows that particles created by inflation have the capability of reheating the universe.展开更多
文摘We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be provided by, for example, experts on information theory （as we are）. Our previous efforts in this direction led to a fascinating result： the theoretical total mass ofa spacetime in which Planck＇s length is an observer-independent scale of length is equal （both in expression and value） to the mass of our portion of Universe measured by national aeronautics and space administration wilkinson microwave anisotropy probe （NASA WMAP） spacecraft. In the following paragraphs we＇ll show how granularity （i.e., discontinuity） of physical entities of our portion of observable spacetime descends directly from the principles of information theory, and how a physical theory about the discontinuity of reality built on these basis can lead to an elegant descriptions of both microcosm and macrocosm.
基金supported by the National Natural Science Foundation of China(Grant No.61471356)
文摘We study the quantization of the Einstein-Hilbert action for a small true vacuum bubble without matter or scalar field. The quan- tization of action induces an extra term of potential called quantum potential in Hamilton-Jacobi equation, which gives expanding solutions, including the exponential expansion solutions of the scalar factor a for the bubble. We show that exponential expansion of the bubble continues with a short period, no matter whether the bubble is closed, fiat, or open. The exponential expansion ends spontaneously when the bubble becomes large, that is, the scalar factor a of the bubble approaches a Planck length lp. We show that it is the quantum potential of the small true vacuum bubble that plays the role of the scalar field potential suggested in the slow-roll inflation model. With the picture of quantum tunneling, we calculate particle creation rate during inflation, which shows that particles created by inflation have the capability of reheating the universe.
