arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1406.2610gr-qchep-th
收藏

从圈量子引力中的洛伦兹不变性引出类弦物理

Emergence of string-like physics from Lorentz invariance in loop quantum gravity

Rodolfo Gambini, Jorge Pullin

摘要:

本文研究了由圈量子引力描述的球对称量子时空中的量子场论。在这样的理论中,时空的自旋网络描述导致量子场的方程是离散的。我们表明,为了避免显着违反洛伦兹不变性需要考虑特定的非本地相互作用的量子场论类似于那些出现在弦论。这是圈量子引力对所考虑的物质类型施加限制的第一个迹象,并指出与弦论物理学的联系。

英文摘要:

We consider a quantum field theory on a spherically symmetric quantum space time described by loop quantum gravity. The spin network description of space time in such a theory leads to equations for the quantum field that are discrete. We show that to avoid significant violations of Lorentz invariance one needs to consider specific non-local interactions in the quantum field theory similar to those that appear in string theory. This is the first sign that loop quantum gravity places restrictions on the type of matter considered, and points to a connection with string theory physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑