On the creation of spacetime volume and gravity in loop gravity | Zendy

Shao Dan | Zendy; Shao Liang | Zendy; Shao Changgui | Zendy

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On the creation of spacetime volume and gravity in loop gravity

Author(s) -

Shao Dan,

Shao Liang,

Shao Changgui

Publication year - 2011

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.60.120401

Subject(s) - spacetime , physics , quantum gravity , spin network , group field theory , spin foam , vertex (graph theory) , quantum field theory in curved spacetime , loop quantum gravity , spacetime symmetries , semiclassical gravity , gravitational field , gravitation , spin (aerodynamics) , mathematical physics , quantum , classical mechanics , quantum mechanics , computer science , quantum dynamics , graph , quantum process , thermodynamics , theoretical computer science

Using the 4-simplex and its dual-skeleton spin networks, a quantum transition of pure spacetime is described. The change of vertex volumes between successive steps of the transition of the three-dimensional space woven by spin networks is demonstrated. At the same time, a model of quantum flate fluctuation of the four-dimensional spacetime is given. Employing the excitations created when the loops on the edges of spin network pierce sarfaces, a 2 order symmerric tensor hab is obtained in three-dimensional space. Based on the viewpoint that the spacetime is excitation and transition system, the creation and the change mechanisms of the gravitational field h are investigated.

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