3 papers
hep-th2026
A Note on the Feynman Lectures on Gravitation
Satoshi Nakajima
Following Feynman's lectures on gravitation, we consider the theory of the gravitational (massless spin-2) field in flat spacetime and present the third- and fourth-order Lagrangia…
cond-mat.stat-mech2024
Speed-Accuracy Trade-Off Relations in Quantum Measurements and Computations
Satoshi Nakajima, Hiroyasu Tajima
In practical measurements, it is widely recognized that reducing the measurement time leads to decreased accuracy. However, whether an inherent speed-accuracy trade-off exists as a…
quant-ph2024
Improvement of Speed Limits: Quantum Effect on the Speed in Open Quantum Systems
Kotaro Sekiguchi, Satoshi Nakajima, Ken Funo +1
In the context of quantum speed limits, it has been shown that the minimum time required to cause a desired state conversion via the open quantum dynamics can be estimated using th…