منابع مشابه
The self-gravitating Fermi gas
We discuss the nature of phase transitions in the self-gravitating Fermi gas at non-zero temperature. This study can be relevant for massive neutrinos in Dark Matter models and for collisionless self-gravitating systems experiencing a “violent relaxation”. Below a critical energy (in the microcanonical ensemble) or below a critical temperature (in the canonical ensemble), the system undergoes a...
متن کاملN-body simulations of self-gravitating gas in stationary fragmented state
The interstellar medium is observed in a hierarchical fractal structure over several orders of magnitude in scale. Aiming to understand the origin of this structure, we carry out numerical simulations of molecular cloud fragmentation, taking into account self-gravity, dissipation and energy input. Selfgravity is computed through a tree code, with fully or quasi periodic boundary conditions. Ene...
متن کاملTwo-component Fermi gas on internal-state-dependent optical lattices.
We study the phase diagram of a one-dimensional, two-component (i.e., pseudo-"spin"-(1/2)) ultracold atomic Fermi gas. The two atom species can have different hopping or mass. A very rich phase diagram for equal densities of the species is found, containing Mott insulators and superfluids. We also discuss coupling such 1D systems and the experimental signatures of the phases. In particular, we ...
متن کاملBousso entropy bound in self - gravitating gas of massless particles
The Bousso entropy bound is investigated in a static spherically symmetric spacetime filled with an ideal gas of massless bosons or fermions. Especially lightsheets generated by spheres are considered. A statistical description of the gas is given. Conditions under which the Bousso bound can be violated are discussed and it is shown that a possible violating region cannot be arbitrarily large a...
متن کاملSelf-gravitating Gas with Two or More Kinds of Particles
We study the statistical mechanics of the self-gravitating gas at thermal equilibrium with two kinds of particles. We start from the partition function in the canonical ensemble which we express as a functional integral over the densities of the two kinds of particles for a large number of particles. The system is shown to possess an infinite volume limit when (N1, N2, V ) → ∞, keeping N1/V 1 3...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1961
ISSN: 0031-899X
DOI: 10.1103/physrev.122.1342