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相关论文: An Extended Excursion Set Approach to Structure Fo…

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The theory of structure formation predicts that galaxies form within extended massive dark matter halos built from smaller pieces that collided and merged, resulting in the hierarchy of galaxies, groups, and clusters observed today. Here we…

天体物理学 · 物理学 2007-05-23 Stefan Gottloeber , Anatoly Klypin , Andrey Kravtsov , Yehuda Hoffman , Andreas Faltenbacher

Toward understanding of dark energy, we propose a novel method to directly produce a chameleon particle and force its decay under controlled gas pressure in a laboratory-based experiment. {\it Chameleon gravity}, characterized by its…

广义相对论与量子宇宙学 · 物理学 2022-08-16 Taishi Katsuragawa , Shinya Matsuzaki , Kensuke Homma

Optogenetics is a powerful neuroscience technique for studying how neural circuit manipulation affects behavior. Standard analysis conventions discard information and severely limit the scope of the causal questions that can be probed. To…

统计方法学 · 统计学 2025-07-02 Gabriel Loewinger , Alexander W. Levis , Francisco Pereira

The health effects of environmental exposures have been studied for decades, typically using standard regression models to assess exposure-outcome associations found in observational non-experimental data. We propose and illustrate a…

应用统计 · 统计学 2017-09-20 Marie-Abele C. Bind , Donald B. Rubin

The initial conditions, physics, and outcome of planet formation are now constrained by detailed observations of protoplanetary disks, laboratory experiments, and the discovery of thousands of extrasolar planetary systems. These…

地球与行星天体物理 · 物理学 2018-12-05 Philip J. Armitage

We introduce here our new approach to modeling particle cloud evolution off surface of small bodies (asteroids and comets), following the evolution of ejected particles requires dealing with various time and spatial scales, in an efficient,…

地球与行星天体物理 · 物理学 2021-03-17 Jennifer N. Larson , Gal Sarid

We carry out a suite of cosmological simulations of modified action f(R) models where cosmic acceleration arises from an alteration of gravity instead of dark energy. These models introduce an extra scalar degree of freedom which enhances…

天体物理学 · 物理学 2008-12-30 Hiroaki Oyaizu , Marcos Lima , Wayne Hu

We discuss an evolutionary dark energy model, based on the presence of non-equilibrium effects on the dark energy constituents, which are described via a bulk viscosity contribution. We implement the proposed dynamics by the analysis of the…

广义相对论与量子宇宙学 · 物理学 2025-02-12 Giovanni Montani , Nakia Carlevaro , Maria G. Dainotti

We discuss the influence of dark energy on structure formation, especially the effects on \sigma_8. Our interest is particularly focused on quintessence models with time-dependent equation of state and non-negligible quintessence component…

天体物理学 · 物理学 2009-11-07 Michael Doran , Jan-Markus Schwindt , Christof Wetterich

We compute the dark matter halo mass function using the excursion set formalism for a diffusive barrier with linearly drifting average which captures the main features of the ellipsoidal collapse model. We evaluate the non-Markovian…

宇宙学与河外天体物理 · 物理学 2011-08-22 P. S. Corasaniti , I. Achitouv

We illustrate a class of conditional models for the analysis of longitudinal data suffering attrition in random effects models framework, where the subject-specific random effects are assumed to be discrete and to follow a time-dependent…

统计方法学 · 统计学 2014-04-28 Antonello Maruotti

Growing Neutrino quintessence describes a form of dynamical dark energy that could explain why dark energy dominates the universe only in recent cosmological times. This scenario predicts the formation of large scale neutrino lumps which…

宇宙学与河外天体物理 · 物理学 2015-05-28 Marco Baldi , Valeria Pettorino , Luca Amendola , Christof Wetterich

We apply the formalism of dynamical system analysis to investigate the evolution of interacting dark energy scenarios at the background and perturbation levels in a unified way. Since the resulting dynamical system contains the extra…

广义相对论与量子宇宙学 · 物理学 2022-02-10 Wompherdeiki Khyllep , Jibitesh Dutta , Spyros Basilakos , Emmanuel N. Saridakis

The high energy transfer efficiency of photosynthetic complexes has been a topic of research across many disciplines. Several attempts have been made in order to explain this energy transfer enhancement in terms of quantum mechanical…

量子物理 · 物理学 2022-09-02 Ali Pedram , Barış Çakmak , Özgür E. Müstecaplıoğlu

Giant gaseous planets often reside on orbits in sufficient proximity to their host stars for the planetary quadrupole gravitational field to become non-negligible. In presence of an additional planetary companion, a precise characterization…

地球与行星天体物理 · 物理学 2015-06-17 Juliette C. Becker , Konstantin Batygin

Dark energy as a quintessence component causes a typical modification of the background cosmic expansion, which in addition to its clustering properties, can leave a potentially distinctive signature on large scale structures. Many previous…

宇宙学与河外天体物理 · 物理学 2010-02-04 J. -M. Alimi , A. Fuzfa , V. Boucher , Y. Rasera , J. Courtin , P. -S. Corasaniti

Due to the processes that occur during the functioning of modern electromechanical systems, these systems can be considered complex nonlinear dynamic systems from the point of view of the theory of dynamic systems. The movement of such…

最优化与控制 · 数学 2024-12-10 Roman Voliansky

Residual velocity dispersion in cold dark matter induces stresses which lead to effects that are absent in the idealized dust model. A previous Newtonian analysis showed how this approach can provide a theoretical foundation for the…

天体物理学 · 物理学 2016-08-25 Roy Maartens , Josep Triginer , David Matravers

We discuss the relevance of studying ecology within the framework of Complexity Science from a statistical mechanics approach. Ecology is concerned with understanding how systems level properties emerge out of the multitude of interactions…

种群与进化 · 定量生物学 2007-09-14 Henrik Jeldtoft Jensen , Elsa Arcaute

According to the current paradigm, galaxies form and reside in extended cold dark matter (CDM) halos and in turn are key tracers of cosmological structure. Understanding how different types of galaxies occupy halos of different masses is…

天体物理学 · 物理学 2009-11-10 Ummi Abbas , Ravi K. Sheth