Lattice gauge gravity.
Lattice gauge gravity.
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格子规重力。
DOI:
10.1103/physrevd.43.1150
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Nielsen
中科院分区:
文献类型:
--
作者:
Kawamoto;Nielsen
We propose a lattice gravity action based on the gauge-theory point of view. We avoid a problem, the action potentially going to infinity by taking the link length to a constant {ital a} (the lattice constant). By fixing the local Lorentz gauge freedom, we obtain a gauge-fixed version of the {ital d}-dimensional action as a sum of {ital a}{sup {ital d}{minus}2}sin{delta} ({delta}=deficit angle) which is a compactified version of Regge calculus. The fermion gravity coupling term can be constructed in a similar way. We point out the possibility that this lattice gravity action approaches the Einstein action in the long-range limit if the action has an ultraviolet fixed point.