The theory of cosmological perturbations is the main tool which connects theories of the early Universe (based on new fundamental physics such as string theory) with cosmological observations. In these lectures, I will provide an introduction to this theory, beginning with an overview of the Newtonian theory of fluctuations, moving on to the analysis of fluctuations in the realm of classical ge...

The discovery of a light Higgs boson at the LHC opens a broad program of studies and measurements to understand the role of this particle in connection with New Physics and Cosmology. Supersymmetry is the best motivated and most thoroughly formulated and investigated model of New Physics which predicts a light Higgs boson and can explain dark matter. This paper discusses how the study of the Hi...

Abstract Trees are the fundamental element of forest ecosystems, made possible by their mechanical qualities and highly sophisticated conductive tissues. The evolution trees, thereby forests, were ecologically transformative affected climate biogeochemical cycles fundamentally. also offer a substantial amount ecological niches for other organisms, such as epiphytes, creating vast habitats. Duri...

astrophysics is becoming now an integral part of general physics. considering the black hole theory ,which is a new and exciting branch of relativistic astrophysics, we see many connections between elementary particle physics and astrophysics. in this article we attempt to explain the development of star physics ,in an easy ,understandable manner. previous knowledge of relativistic theory or cl...

A comprehensive investigation on how size winding of quantum operators connects to bulk gravitational physics and traversable wormholes is presented, together with a proposal possible realizations in near-term devices.

We remind that the assumptions almost universally adopted among astronomers concerning the physics to use to describe rarefied cosmic gases remain often without justifications, mainly because the long range of gravitation invalidates the use of classical thermal physics. In turn, without sufficiently good local thermal equilibrium, macroscopic quantities, such as temperature and pressure, are n...