The emergence of expanding space-time in the Lorentzian type IIB matrix model with a novel regularization
M. Hirasawa*,
K. Anagnostopoulos,
T. Azuma,
K. Hatakeyama,
J. Nishimura,
S. Papadoudis and
A. Tsuchiya*: corresponding author
Published on:
November 08, 2023
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.
DOI: https://doi.org/10.22323/1.436.0309
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