3 papers
quant-ph2001
Driving Hamiltonian in a Quantum Search Problem
Kazuto Oshima
We examine the driving Hamiltonian in the analog analogue of Grover's algorithm by Farhi and Gutmann. For a quantum system with a given Hamiltonian , we explicitly show…
hep-th2001
Critical Coupling in (1+1)-Dimensional Light-Front Theory. II -effects of non-diagonal interactionof non-diagonal interactions-
Kazuto Oshima
Spontaneous symmetry breaking in (1+1)-dimensional theory is studied with discretized light-front quantization. Taking effects of non-diagonal interactions into account, th…
hep-th1994
Gap Equations of O(N) Non-linear Sigma Model in Three Dimensions
Kazuto Oshima
We study the non-linear model on three-dimensional manifolds of constant curvature by means of the large expansion at the critical point. We examine saddle point equ…