50 citations · 79 across the 6 of their papers we have counts for
6 papers
Energy-momentum Tensor: Noether vs Hilbert
Akio Hosoya, Shunsuke Fujii
We revisit the old problem of the energy-momentum tensor in general relativistic field theories. On the basis of the general covariance we derive a simple equation for the Hilbert…
Quantum Brachistochrone for Mixed States
A. Carlini, A. Hosoya, T. Koike +1
We present a general formalism based on the variational principle for finding the time-optimal quantum evolution of mixed states governed by a master equation, when the Hamiltonian…
Quantum Entropy Bound by Information in Black Hole Spacetime
A. Hosoya, A. Carlini
We show that the increase of the generalized entropy by a quantum process outside the horizon of a black hole is more than the Holevo bound of the classical information lost into t…
Generalized Second Law of Black Hole Thermodynamics and Quantum Information Theory
A. Hosoya, A. Carlini, T. Shimomura
We propose a quantum version of a gedanken experiment which supports the generalized second law of black hole thermodynamics. A quantum measurement of particles in the region outsi…
Quantum Computers and Unstructured Search: Finding and Counting Items with an Arbitrarily Entangled Initial State
A. Carlini, A. Hosoya
Grover's quantum algorithm for an unstructured search problem and the Count algorithm by Brassard et al. are generalized to the case when the initial state is arbitrarily and maxim…
Quantum Probabilistic Subroutines and Problems in Number Theory
A. Carlini, A. Hosoya
We present a quantum version of the classical probabilistic algorithms la Rabin. The quantum algorithm is based on the essential use of Grover's operator for the quantu…