80 citations · 440 across the 45 of their papers we have counts for
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Local virial relation for self-gravitating system
Osamu Iguchi, Yasuhide Sota, Akika Nakamichi +1
We demonstrate that the quasi-equilibrium state in self-gravitating -body system after cold collapse are uniquely characterized by the local virial relation using numerical simu…
Why is the Zel'dovich Approximation so Accurate?
A. Yoshisato, M. Morikawa, N. Gouda +1
Why does the Zel'dovich approximation (ZA) work well to describe gravitational collapse in the universe? This problem is examined by focusing on its dependence on the dimensionalit…
Relativistic Gross-Pitaevskii equation and the cosmological Bose Einstein Condensation
Takeshi Fukuyama, Masahiro Morikawa
We do not know 96% of the total matter in the universe at present. In this paper, a cosmological model is proposed in which Dark Energy (DE) is identified as Bose-Einstein Condensa…
Local virial relation and velocity anisotropy for collisionless self-gravitating systems
Y. Sota, O. Iguchi, M. Morikawa +1
The collisionless quasi-equilibrium state realized after the cold collapse of self-gravitating systems has two remarkable characters. One of them is the linear temperature-mass (TM…
Fully Degenerate Self-Gravitating Fermionic Dark Matter: Implications to the Density Profile of the Cluster of Galaxies A1689, and the Mass Hierarchy of Black Holes
Tadashi Nakajima, Masahiro Morikawa
Equilibrium configurations of weakly interacting fully degenerate fermionic dark matter are considered at various scales in the Universe. We treat the general situations for the gr…
Quantum measurement driven by spontaneous symmetry breaking
Masahiro Morikawa, Akika Nakamichi
The measurement process in quantum mechanics is usually described by the von Neumann projection postulate, which forms a basic constituent of the laws of quantum mechanics. Since t…