17 citations · 20 across the 8 of their papers we have counts for
9 papers
Rethinking quantum information in gravity and fields
Kanato Goto, Yuta Hamada, Kohtaro Kato +6
This paper presents a curated selection of research questions at the intersection of quantum gravity and quantum information, chosen to highlight issues that we regard as particula…
Exponentially Long Evaporation of Noncommutative Black Hole
Pei-Ming Ho, Wei-Hsiang Shao, Takuya Yoda
We investigate Hawking radiation in noncommutative spacetime. For a dynamical black hole formed by the collapse of a matter shell, we demonstrate that spacetime noncommutativity mo…
Heat and work in black hole thermodynamics via holography
Tomohiro Shigemura, Keito Shimizu, Sotaro Sugishita +2
We propose a formulation of black hole thermodynamics that incorporates the notions of heat and work, based on the thermodynamics in quantum theory and the AdS/CFT correspondence.…
Complex Saddles of Truncated String Amplitudes
Takuya Yoda
String scattering amplitudes in the high energy asymptotic region have been studied by saddle point approximation. Recently, it was pointed out that infinitely many complex saddles…
Complex saddles and time-delay of Veneziano amplitude
Takuya Yoda
String scattering amplitudes are typically expressed in formal integrals which diverge in physical kinematic regions. Recently the problem of divergence was cured by redefining int…
Photon sphere and quasinormal modes in AdS/CFT
Koji Hashimoto, Kakeru Sugiura, Katsuyuki Sugiyama +1
Photon spheres are the characteristic of general black holes, thus are a suitable touchstone for the emergence of gravitational spacetime in the AdS/CFT correspondence. We provide…
Transient chaos analysis of string scattering
Koji Hashimoto, Yoshinori Matsuo, Takuya Yoda
It has long been thought that a highly excited string can be regarded as a black hole: the correspondence principle between strings and a black hole, while recent studies found tha…
String is a double slit
Koji Hashimoto, Yoshinori Matsuo, Takuya Yoda
We perform imaging of a fundamental string from string scattering amplitudes, and show that its image is a double slit.
Comments on the Atiyah-Patodi-Singer index theorem, domain wall, and Berry phase
Tetsuya Onogi, Takuya Yoda
It is known that the Atiyah-Patodi-Singer index can be reformulated as the eta invariant of the Dirac operators with a domain wall mass which plays a key role in the anomaly inflow…