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Existence of Equilibrium Points and their Linear Stability in the Generalized Photogravitational Chermnykh-Like Problem with Power-law Profile
Existence of Equilibrium Points and their Linear Stability in the Generalized Photogravitational Chermnykh-Like Problem with Power-law Profile
2011/10/14
We consider the modified restricted three body problem with power-law density profile of disk, which rotates around the center of mass of the system with perturbed mean motion. Using analytical and nu...
Inflation and primordial non-Gaussianities of "generalized Galileons"
Inflation primordial non-Gaussianities
2011/10/9
We set up cosmological perturbation theory and study the cosmological implications of the so-called `generalized Galileon' developed in \cite{Deffayet:2011gz,horndeski}.This is the most general scalar...
A Generalized Flux Function for Three-dimensional Magnetic Reconnection
Generalized Flux Function Three-dimensional Magnetic Reconnection
2011/10/18
The definition and measurement of magnetic reconnection in three-dimensional magnetic fields with multiple reconnection sites is a challenging problem, particularly in fields lacking null points. We p...
Dynamical neutrino masses in the generalized Chaplygin gas scenario with mass varying CDM
neutrino masses generalized Chaplygin gas scenario mass varying CDM
2010/11/10
Neutrinos coupled to an underlying scalar field in the scenario for unification of mass varying
dark matter and cosmon-like dark energy is examined. In the presence of a tiny component of mass varyin...
Scalar models for the generalized Chaplygin gas and the structure formation constraints
Scalar models generalized Chaplygin gas structure formation constraints
2010/11/9
The generalized Chaplygin gas model represents a tentative to unify dark matter and dark
energy. It is characterized by a fluid with an equation of state p = −A/ . It can be obtained from a ge...
Generalized equation of state for cold superfluid neutron stars
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
Mature neutron stars are expected to contain various kinds of superfluids in their interiors. Modeling such stars requires the knowledge of the mutual entrainment couplings between the different conde...
Domain Wall, Stiff Matter and Ultra-Relativistic Particles from a Generalized Double-Component Dark Energy Model
Super-accelerated expansion dark energy domain wall cosmic string stiff matter
2010/6/30
This letter discusses a modified Friedmann-Robertson-Walker cosmology in which the equation of state behaves like p = 3hamrn r; (h;m;n) 2 R. Many interesting features are revealed in particu...
Matter power spectrum for the generalized Chaplygin gas model: The relativistic case
generalized Chaplygin gas dark matter dark energy
2010/3/19
The generalized Chaplygin gas (GCG) model is the prototype of a unified model of dark energy (DE) and dark matter (DM). It is characterized by equation-of-state (EoS) parameters $A$ and $\alpha$. We u...
The Generalized Uncertainty Principle and Quantum Gravity Phenomenology
Quantum Gravity Phenomenology
2010/3/19
In this article we examine a Generalized Uncertainty Principle which differs from the Heisenberg Uncertainty Principle by terms linear and quadratic in particle momenta, as proposed by the authors in ...
Development of a generalized scidar at UNAM。
GENERALIZED SCHUSTER LAW AND KING’S FORMULA
King’s density formula identical density values
2009/3/26
By varying a particular form of the generalised Schuster density
law (the exponent in the denominator equal to 3
2 ) the authors look for a suitable
substitution for King’s density formula usually ...
STABILITY OF THE RELATIVE EQUILIBRIA IN THE GENERALIZED J2 PROBLEM
celestial bodies dynamical systems potential function
2009/3/18
For a large class of concrete astronomical situations, the motion
of celestial bodies is modelled by dynamical systems associated to a potential function
α/r + εU (r = distance between particles, α ...
On Current-Carrying Cosmic Strings and the Generalized Rainich Algebra in Scalar-Tensor Gravities
Current-Carrying Cosmic Strings the Generalized Rainich Algebra Scalar-Tensor Gravities
2010/10/15
We obtain exact solutions for a static and charged cosmic string in a Einstein-Maxwell-Dilaton theory of a scalar-tensor type in (3+1)-Dimensions. This theory is specified by the dilaton field f, the ...