The emergence of expanding space-time in the Lorentzian type IIB matrix model with a novel regularization

2023/07/04 by Mitsuaki Hirasawa, Hirasawa, Mitsuaki, Κωνσταντίνος Αναγνωστόπουλος +11 · 1 citation
Computer Science · Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Theory (hep-th) #Quantum Information and Cryptography #Quantum optics and atomic interactions

paper · pdf · doi:10.48550/arxiv.2307.01681

openalex publication_date 2023/07/04 · openalex created_date 2023/11/10 · openalex updated_date 2026/07/28

Abstract

The Lorentzian type IIB matrix model is a promising candidate for a non-perturbative formulation of superstring theory. However, it was recently found that a Euclidean space-time appears in the conventional large-N limit. In this work, we study the model with a Lorentz invariant mass term which can be considered as an IR regulator. By performing complex Langevin simulations to overcome the sign problem, we observe the emergence of expanding space-time with Lorentzian signature.

Cited by

• Spatially flat cosmological quantum spacetimes

Related

• The emergence of expanding space-time in a novel large-N limit of the Lorentzian type IIB matrix model
• The effects of SUSY on the emergent spacetime in the Lorentzian type IIB matrix model
• A new phase in the Lorentzian type IIB matrix model and the emergence of continuous space-time
• New perspectives on the emergence of (3+1)D expanding space-time in the\n Lorentzian type IIB matrix model
• Relationship between the Euclidean and Lorentzian versions of the type IIB matrix model