3 papers
hep-th2025
Black Hole Entropy from String Entanglement
Soichiro Mori, Tadakatsu Sakai, Masaki Shigemori
We discuss the notion of string entanglement in string theory, which aims to study entanglement between worldsheet Hilbert spaces rather than entanglement between spacetime Hilbert…
hep-th2025
Finite Bulk Hilbert Space in ETH Matrix Model for double-scaled SYK
Masamichi Miyaji, Soichiro Mori, Kazumi Okuyama
We extend the notion of chord number in the strict large double-scaled Sachdev-Ye-Kitaev (DSSYK) model to the corresponding finite ETH matrix model. The chord number in the…
hep-th2022
Target space entanglement in quantum mechanics of fermions at finite temperature
Temma Hanyuda, Soichiro Mori, Sotaro Sugishita
We consider the target space entanglement in quantum mechanics of non-interacting fermions at finite temperature. Unlike pure states investigated in arXiv:2105.13726, the (Rényi) e…