Advanced searches left 3/3

Energy - Astrophysics Data System

Summarized by Plex Scholar
Last Updated: 03 September 2022

* If you want to update the article please login/register

Fluctuating Dark Energy and the Luminosity Distance

The source of dark energy that fueled the Universe's expansion is still unclear. In several ways, spatial correlations influence the luminosity distance. We show that spatial coordinates can influence the luminosity distance in many ways. We then perform a forecast for two supernova studies, the ongoing Dark Energy Survey, and the forthcoming Legacy Survey of Space and Time, as well as the effect of perturbed 0̆39b CDM perturbed lensing effects. The signal will rise above the lensing effects, according to the study, and LSST may be able to test this effect for a significant portion of the parameter space. Quantitative fluctuations of some field in the early universe imprint spatial correlations in a predictable manner in the dark energy density today, as an example. As an example, a concrete representation of such a scenario is that quantum fluctuations of some field in the early universe imprint spatial links with a known form in the dark energy density today. The Hubble rate fluctuates due to the intrinsic quantum nature of the dark energy density field in this case.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900440V/abstract


Sampling Rare Event Energy Landscapes via Birth-Death Augmented Dynamics

The so-called sampling problem, or rare event problem that affects simulations of complex systems within the computational physics and chemistry communities, is obstructed by the presence of high kinetic barriers that prevent transitions between metastable states on traditional simulation time scales. Several new sampling techniques have been developed to solve this sampling issue and more accurately measure rare event systems. We expand on this theory and show that this birth-death sampling technique can accurately identify prototypical rare event energy landscapes, regardless of the barrier height. In the more general case of underdamped Langevin dynamics that is more commonly used in simulating physical systems, we show that the birth-death device can be used to accelerate sampling.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900607P/abstract


Four-point bending piezoelectric energy harvester with uniform surface strain toward better energy conversion performance and material usage

Improving the energy conversion efficiency of piezoelectric energy harvesters is of utmost importance, and one option is to make more uniform use of the working material by ensuring a uniform strain state. Finally, the four-point bending success and the highest figure of merit are discussed with a view to the harvester's long-term exhaustion life. In the best four-point bending energy conversion conditions, the energy conversion coefficient is more than three times higher than that of typical cantilever energy harvesters. The axial strain experienced in a standard cantilever harvester is more than three times higher than that of a four-point bending harvester, suggesting that the latter device has higher fatigue results. Overall, the improved piezoelectric harvester has increased energy conversion capability and experiences less and uniform surface strain, making it suitable for high-efficiency energy harvesting methods.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900252K/abstract


Energy enhancement of laser-driven ions by radiation reaction and Breit-Wheeler pair production in the ultra-relativistic Breakout-Afterburner regime

The electrons lose most of their transverse momentum, and the newly produced pair plasma of Breit-Wheeler electrons and positrons co-stream in the forward direction, relative to the previous electrons streaming at an angle above zero. This results in shifts in the phase velocity of the Buneman instability, which is known to promote ion acceleration in the BOA regime, by tapping the free energy in the relative electron and ion streams.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900267B/abstract


Barrow holographic dark energy models in $f\left( Q\right)$ symmetric teleparallel gravity with Lambert function distribution

Barrow's holographic dark energy was recently discovered by Barrow in an anisotropic Bianchi type-I Universe within the framework of symmetric teleparallel gravity, where the non-metric scalar Q is responsible for gravitational interaction.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900341K/abstract


Optimal Storage for Solar Energy Self-Sufficiency

As a result of excess capacity in a combined solar-energy generation and storage system, we determine the energy storage required to ensure self sufficiency to a given level. We develop a statistical model that we use to obtain synthetic insolation data over millions of years from 40 years of solar-energy records for the St. Louis area. These data are used to monitor the depletion of energy in the storage system during the winter solstice.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900167C/abstract


Towards Early Dark Energy in String Theory

Early Dark Energy is a common model to resolve the Hubble tension, because it uses a dynamic axion with a periodicity. We take the first steps toward the embedding of this model into solid string theory compensions in this paper. We create a simple supergravity toy model from scratch on second, using only basic ingredients. We embed the model into a KKLT-type compactification, with the EDE scalar field realized by a two-form axion in the third and final stage.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900011M/abstract


The Penrose Inequality as a Constraint on the Low Energy Limit of Quantum Gravity

Using scalars of various possibilities, we obtain initial reports proving the AdS Penrose inequality. Since the Penrose distinction can be deduced from basic entries in the AdS/CFT dictionary, we believe that it is a new swampland condition, effectively ending out holographic UV completion for theories that contradict it. In the rare case where the predominant energy condition prevails, we use GR techniques to establish AdS Penrose differences in all dimensions greater than two, assuming spherical, planar, or hyperbolic symmetry.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900013F/abstract


Energy-Efficient Trajectory Design of a Multi-IRS Assisted Portable Access Point

The GEE trajectory for the PAP is created by considering both the UAV propulsion energy consumption and the Peukert effect of the PAP battery, as a non-linear function of the UAV power consumption profile. The GEE trajectory design challenge is solved in two phases: in the first, a path for the PAP and feasible positions for the IRS modules is found using a multi-tier circle packing process, and the required IRS phase shift values are calculated using a novel multilap trajectory design algorithm; in the second phase, the PAP and phase response times of an IRS element are determined; and the required IRS phase shift values are estimated using a novel multilap trajectory design algorithm; and in the second phase, the PAP and phase.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900297B/abstract


Addressing the Short-Baseline Neutrino Anomalies with Energy-Dependent Mixing Parameters

This assumption, on the other hand, is strongly opposed until one considers all neutrino results, particularly those that establish muon and electron neutrinos' disappearance at short-baselines. We show that if the sterile-active mixing parameters depend on the energy-scales that characterize neutrino production and detection, the sterile-neutrino hypothesis may be a good substitute to all neutrino results. The reason for the enhanced fit is that the stringent disappearance constraints placed on the various components of the extended neutrino mixing matrix are related to manufacturing and detection energies that are different from those that characterize the anomalous LSND and MiniBooNE appearance results.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220900031B/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions