947 research outputs found
Axion monodromy inflation with sinusoidal corrections
We study the axion monodromy inflation with a non-perturbatively generated
sinusoidal term. The potential form is a mixture between the natural inflation
and the axion monodromy inflation potentials. The sinusoidal term is
subdominant in the potential, but leaves significant effects on the resultant
fluctuation generated during inflation. A larger tensor-to-scalar ratio can be
obtained in our model. We study two scenarios, single inflation scenario and
the double inflation scenario. In the first scenario, the axion monodromy
inflation with a sufficient number of e-fold generates a larger
tensor-to-scalar ratio about but also a tiny running of spectral
index. In the second scenario of double inflation, axion monodromy inflation is
its first stage and, we assume another inflation follows. In this case, our
model can realize a larger tensor-to-scalar ratio and a large negative running
of spectral index simultaneously.Comment: 12 pages, 3 figures, version accepted for publication in PTEP:
References and some comments added, and typos correcte
Mesoscale modeling of colloidal suspensions with adsorbing solutes
We construct a mesoscale model of colloidal suspensions that contain solutes
reversibly adsorbing onto the colloidal particle surfaces. The present model
describes the coupled dynamics of the colloidal particles, the host fluid, and
the solutes through the Newton-Euler equations of motion, the hydrodynamic
equations, and the advection-diffusion equation, respectively. The solute
adsorption is modeled through a square-well potential, which represents a
short-range attractive interaction between a particle and a solute molecule.
The present model is formulated to be solved through direct numerical
simulations. Some numerical results are presented to validate the simulations.
The present model enables investigations of solute adsorption effects in the
presence of a fluid flow and an inhomogeneous solute concentration
distribution.Comment: 9 pages, 7 figure
Axion monodromy inflation with multi-natural modulations
We study parameter space in the axion monodromy inflation corrected by
dynamically generated terms involving with the axion. The potential has the
linear potential with multiple sinusoidal functions, which play a role in
generating modulations. We show that this potential leads both to a large
tensor-to-scalar ratio and to a large negative running of
spectral index . To realize these results, a
small hierarchy among dynamical scales is required whereas the decay constants
in sinusoidal functions remain sub-Planckian in this model. We discuss also
reheating process after the inflation in a bottom-up approach.Comment: 22 pages, 7 figures, version accepted for publication in JCAP:
references and some comments added, and typos correcte
Facial feature point extraction method based on combination of shape extraction and pattern matching
HISTOCHEMICAL STUDIES ON THE PROCESS OF THE FRESH HIDES TO TANNED LEATHERS. (REPORT I), ESPECIALLY ON THE RIPENING OF THE HIDES IN COLD STORAGE AND THE DIAGNOSIS OF THE DECOMPOSED HIDES
Conversion of Aluminum Dross to Sialon-Based Ceramics by Combustion Synthesis(Materials, Metallurgy & Weldability)
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