论文标题
在新颖的lorentzian类型IIB矩阵模型中扩大时空的出现
The emergence of expanding space-time in a novel large-$N$ limit of the Lorentzian type IIB matrix model
论文作者
论文摘要
Lorentzian型IIB矩阵模型是非扰动理论的有前途的候选人。但是，最近发现，欧几里得时空出现在传统的大$ n $限制中。在这项工作中，我们在原始型号中添加了洛伦兹不变的质量术语，并考虑一个限制，其中质量术语的系数在$ n $中消失。通过执行复杂的Langevin模拟来克服符号问题，我们观察到通过Lorentzian签名扩大时空的出现。
The Lorentzian type IIB matrix model is a promising candidate for a non-perturbative formulation of superstring theory. However, it was found recently that a Euclidean space-time appears in the conventional large-$N$ limit. In this work, we add a Lorentz invariant mass term to the original model and consider a limit, in which the coefficient of the mass term vanishes at large $N$. By performing complex Langevin simulations to overcome the sign problem, we observe the emergence of expanding space-time with the Lorentzian signature.
