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:
Physical Review D, Particles and fields
影响因子:
--
通讯作者:
Nielsen
Nielsen
中科院分区:
--
文献类型:
--
作者:
Kawamoto;Nielsen

文献摘要

被引文献

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我们提出了基于规范理论观点的晶格引力作用。我们通过将链接长度取为常数 {ital a} (晶格常数)来避免一个问题,即动作可能会趋于无穷大。通过固定局部洛伦兹规范自由度,我们获得了规范固定版本的 {ital d} 维作用,作为 {ital a}{sup {ital d}{minus}2}sin{delta} ({delta}=亏角)的总和,这是雷格微积分的压缩版本。费米子重力耦合项可以用类似的方式构造。我们指出,如果该作用具有紫外线不动点,则该晶格引力作用在长程极限内接近爱因斯坦作用的可能性。
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.