4 papers
Linear Temperature-Mass relation and Local virial relation: Two hypotheses for self-gravitating systems
Y. Sota, O. Iguchi, M. Morikawa +1
We propose two hypotheses which characterize the quasi-equilibrium state that realizes after a cold collapse of self-gravitating system. The first hypothesis is the linear temperat…
Galaxy Distributions and Tsallis Statistical Mechanics
Akika Nakamichi, Izumi Joichi, Osamu Iguchi +1
Large-scale astrophysical systems are non-extensive due to their long-range force of gravity. Here we show an approach toward the statistical mechanics of such self-gravitating sys…
Quantized Topological 2-form Gravity
Tomoyuki Inui, Akika Nakamichi
We develop a perturbation theory of four-dimensional topological 2-form gravity without cosmological constant. A 2-form and an connection 1-form are used as fundamental var…
Wave Function of the Universe in Topological and in Einstein 2-form Gravity
Akika Nakamichi
We clarify the relation between 2-form Einstein gravity and its topological version. The physical space of the topological version is contained in that of the Einstein gravity. Mor…