A quantized spacetime based on Spin(3,1) symmetry

被引:1
|
作者
Chen, Pisin [1 ,2 ,3 ,4 ]
Chiang, Hsu-Wen [1 ,2 ]
Hu, Yao-Chieh [1 ,2 ,3 ]
机构
[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan
[3] Natl Taiwan Univ, Grad Inst Astrophys, Taipei 10617, Taiwan
[4] Stanford Univ, SLAC Natl Accelerator Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2016年 / 25卷 / 13期
关键词
Noncommutative geometry; quantum gravity; generalized uncertainty principle; QUANTUM-GRAVITY; LENGTH OPERATOR;
D O I
10.1142/S0218271816450048
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We introduce a new type of the spacetime quantization based on the spinorial description suggested by loop quantum gravity. Specifically, we build our theory on a string theory inspired Spin(3, 1) worldsheet action. Because of its connection with quantum gravity theories, our proposal may in principle link back to string theory, connect to loop quantum gravity where SU(2) is suggested as the fundamental symmetry, or serve as a Lorentzian spin network. We derive the generalized uncertainty principle and demonstrate the holographic nature of our theory. Due to the quantization of spacetime, geodesics in our theory are fuzzy, but the fuzziness is shown to be much below conceivable astrophysical bounds.
引用
收藏
页数:6
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