We discuss quantum dynamics in multi-dimensional non-linear systems. It is well-known that wave function is localized in a single kicked rotor. However, coupling with other degrees of freedom breaksâ€¦ (More)

We study the canonical quantum theory of the Reissner-NordstrÃ¶m-de Sitter black hole(RNdS). We obtain an exact general solution of the WheelerDeWitt equation for the spherically symmetric geometryâ€¦ (More)

The physical meaning for the quantum theory of Einstein-Maxwell action with a cosmological constant in spherically symmetric space-time is studied in view of the de Broglie-Bohm interpretation. Theâ€¦ (More)

The exact formula of the one-level distribution of the Schmidt eigenvalues is obtained for dynamical formation of entanglement in quantum chaos. The formula is based on the random matrix theory ofâ€¦ (More)

At the dawn of the quantum mechanics, entangled states of spatially separated bi-particle systems triggered fierce discussions because of their paradoxical property [1]. These discussions lead to theâ€¦ (More)

Physical review. E, Statistical, nonlinear, andâ€¦

2013

We study statistics of entanglement generated by quantum chaotic dynamics. Using an ensemble of the very large number (>/~10(7)) of quantum states obtained from the temporally evolving coupled kickedâ€¦ (More)

We discuss the classicalization of a quantum state induced by an environment in the inflationary stage of the universe. The classicalization is necessary for the homogeneous ground state to becomeâ€¦ (More)

Gravitational instantons of Bianchi type IX space are constructed in Ashtekarâ€™s canonical formalism. Instead of solving the self-duality condition, we fully solve the constraint on the â€œinitialâ€¦ (More)