Anomalous dimension in three-dimensional semiclassical gravity

Anomalous dimension in three-dimensional semiclassical gravity
复制标题

三维半经典引力中的反常维度

DOI:
10.1016/j.physletb.2011.12.026
复制
发表时间:
2011
期刊:
影响因子:
4.4
通讯作者:
M. Arzano
M. Arzano
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Emanuele Alesci;M. Arzano

文献摘要

参考文献

被引文献

相似文献

耦合到三维爱因斯坦引力的相对论粒子的相空间的描述需要动量,动量是群流形上的坐标,而不是普通的闵可夫斯基空间。相应的场论是位形空间上的非对易场论和动量空间上的群场论。利用基本的非对易傅立叶变换工具,我们引入了与非对易位形空间上的拉普拉斯算子相关联的非对易热核的概念。我们发现,谱维数与非交换热核的尺度达到一个非整数值小于3普朗克扩散尺度的变化。
The description of the phase space of relativistic particles coupled to three-dimensional Einstein gravity requires momenta which are coordinates on a group manifold rather than on ordinary Minkowski space. The corresponding field theory turns out to be a non-commutative field theory on configuration space and a group field theory on momentum space. Using basic non-commutative Fourier transform tools we introduce the notion of non-commutative heat-kernel associated with the Laplacian on the non-commutative configuration space. We show that the spectral dimension associated to the non-commutative heat kernel varies with the scale reaching a non-integer value smaller than three for Planckian diffusion scales.
DOI: 10.1088/0264-9381/27/16/165009
发表时间: 2009-07
影响因子: 3.5
作者:
J. Barrett;R. J. Dowdall;W. Fairbairn;F. Hellmann;R. Pereira
通讯作者: J. Barrett;R. J. Dowdall;W. Fairbairn;F. Hellmann;R. Pereira