Complex Langevin studies of the emergent space?time in the type IIB matrix model
Complex Langevin studies of the emergent space?time in the type IIB matrix model
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IIB 型矩阵模型中涌现时空的复朗之万研究
DOI：
10.1142/9789811261633_0002
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Tsuchiya Asato
中科院分区：
文献类型：
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作者：
Hatakeyama Kohta;Anagnostopoulos Konstantinos;Azuma Takehiro;Hirasawa Mitsuaki;Ito Yuta;Nishimura Jun;Papadoudis Stratos;Tsuchiya Asato
自1996年以来，IIB矩阵模型被提出作为超弦理论的非微扰定义。我们用蒙特卡罗方法研究了一个非微扰地描述IIB矩阵模型的后期行为的简化模型，并用复朗之万法克服了符号问题。我们研究了一个时空签名从早期的欧几里得动态变化到后期的洛伦兹签名的场景。我们讨论了(3+1)维膨胀宇宙出现的可能性。
The IIB matrix model has been proposed as a non-perturbative definition of superstring theory since 1996. We study a simplified model that describes the late time behavior of the IIB matrix model non-perturbatively using Monte Carlo methods, and we use the complex Langevin method to overcome the sign problem. We investigate a scenario where the space–time signature changes dynamically from Euclidean at early times to Lorentzian at late times. We discuss the possibility of the emergence of the (3+ 1) D expanding universe.