Paper presents research of local losses and temperature rise in transformer steel tank. First experimental method based on initial rate is presented. This a direct for determining distribution structural parts. Technique relies the fact that after body has settled at steady state internal heat source suddenly removed or applied, change any point proportional to input (loss density) point. To te...

We prove semiclassical estimates for the Schrödinger-von Neumann evolution with C 1 , potentials and density matrices whose square root have either Wigner functions low regularity independent of dimension, or matrix elements between Hermite having long range decay. The are settled in different weak topologies apply to initial operators 7 times differentiable, independently dimension. They also ...

Population growth involves demographic bottlenecks that regulate recruitment success during various early life-history stages. The success of each early life-history stage can vary in response to population density, interacting with intrinsic (e.g. behavioural) and environmental (e.g. competition, predation) factors. Here, we used the common reef-building coral Acropora millepora to investigate...

The coin-position entanglement generated by the evolution operator of a discrete–time quantum walk is quantified, using the von Neumann entropy of the reduced density operator (entropy of entanglement). In the case of a single walker, the entropy of entanglement converges, in the long time limit, to a well defined value which depends on the initial state. Exact expressions are obtained for loca...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We derive accurate semianalytic formulas for the power spectra from two-field inflation assuming an arbitrary poten...

We investigate numerically a single-pulse implementation of a quantum ControlNot (CN) gate for an ensemble of Ising spin systems at room temperature. For an ensemble of four-spin “molecules” we simulate the time-evolution of the density matrix, for both digital and superpositional initial conditions. Our numerical calculations confirm the feasibility of implementation of quantum CN gate in this...

The correlation function ξ(r) of matter in the non-linear regime is assumed to be determined by the density profiles ρ(r) and the mass distribution n(M) of virialized halos. The Press–Schechter approach is used to compute n(M), and the stable clustering hypothesis is used to determine the density profiles of these Press–Schechter halos. Thus, the shape and amplitude of ξ(r) on small scales is r...

Scalar fields with inverse power-law effective potentials may provide a negative pressure component to the energy density of the universe today, as required by cosmological observations. In order to be cosmologically relevant today, the scalar field should have a mass mφ = O(10 −33eV), thus potentially inducing sizable violations of the equivalence principle and space-time variations of the cou...

Experimental study of the anisotropy in the cosmic microwave background (CMB) is gathering momentum. The eagerly awaited Boomerang results have lived up to expectations. They provide convincing evidence in favor of the standard paradigm: the Universe is close to flat and with primordial fluctuations which are redolent of inflation. Further scrutiny reveals something even more exciting however –...