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Curvature perturbation from velocity modulation     Curvature  perturbation  velocity modulation       font style='font-size:12px;'> 2011/10/9
We propose a new variant model of the modulated reheating. If particles have large scale fluctuations on their velocities, or equivalently their Lorentz factors, the decay rate also fluctuates and the...
We study linear perturbations around the static and spherically symmetric spacetime for the gravitational theories whose Lagrangian depends on Ricci scalar and the parity violating Chern-Simons term. ...
We carried out numerical calculations of a contribution of the waterfall field to the primordial curvature perturbation (on uniform density hypersurfaces) $\zeta$, which is produced during waterfall t...
A diagrammatic approach to calculate n-point correlators of the primordial curvature perturbation \zeta was developed a few years ago following the spirit of the Feynman rules in Quantum Field Theory....
Conformal invariance of curvature perturbation     Conformal invariance  curvature  perturbation       font style='font-size:12px;'> 2011/10/18
We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the ...
Subject of this paper is a careful and detailed analysis of the PINOCCHIO algorithmfor studying the relative velocity statistics of merging haloes in Lagrangian perturbation theory. Given a cosmolog...
We study carefully the contribution of the waterfall field to the curvature perturbation at the end of hybrid inflation. In particular we clarify the parameter dependence analytically under reasonable...
We investigate f(T) cosmology in both the background, as well as in the perturbation level, and we present the general formalism for reconstructing the equivalent one-parameter family of f(T) models f...
Although the methods and techniques have been greatly improved since the late nineteenth century, the precision on the measurement of the gravitational constant G does not exceed 1 part in 1000. Intri...
THERMAL PROCESSES AND SPIRAL DENSITY WAVES I. RESPONSE OF THE GALACTIC DISC TO A PERTURBATION IN THE GRAVITATIONAL POTENTIAL。
PERTURBATION THEORY FOR LOW SATELLITES:AN APPLICATION     LOW SATELLITES  PERTURBATION THEORY       font style='font-size:12px;'> 2009/4/8
PERTURBATION THEORY FOR LOW SATELLITES:AN APPLICATION

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