3 papers
hep-th2025
Monte Carlo studies of the emergent spacetime in the polarized IKKT model
Chien-Yu Chou, Jun Nishimura, Cheng-Tsung Wang
The IKKT matrix model has been investigated as a promising nonperturbative formulation of superstring theory. One of the recent developments concerning this model is the discovery…
hep-th2025
Inequivalence between the Euclidean and Lorentzian versions of the type IIB matrix model from Lefschetz thimble calculations
Chien-Yu Chou, Jun Nishimura, Ashutosh Tripathi
The type IIB matrix model is conjectured to describe superstring theory nonperturbatively in terms of ten bosonic traceless Hermitian matrices ($μ=0, \ldots ,…
gr-qc2025
Monte Carlo studies of quantum cosmology by the generalized Lefschetz thimble method
Chien-Yu Chou, Jun Nishimura
Quantum cosmology aims at elucidating the beginning of our Universe. Back in early 80's, Vilenkin and Hartle-Hawking put forward the "tunneling from nothing" and "no boundary" prop…