Results 41 to 50 of about 144,099 (322)

Inflation as an attractor in scalar cosmology

open access: yes, 2013
We study an inflation mechanism based on attractor properties in cosmological evolutions of a spatially flat Friedmann-Robertson-Walker spacetime based on the Einstein-scalar field theory. We find a new way to get the Hamilton-Jacobi equation solving the
Kim, Hyeong-Chan
core   +1 more source

Fixed Point Attractor Theory Bridges Structure and Function in C. elegans Neuronal Network

open access: yesFrontiers in Neuroscience, 2022
Understanding the structure–function relationship in a neuronal network is one of the major challenges in neuroscience research. Despite increasing researches at circuit connectivity and neural network structure, their structure-based biological ...
Jian Liu   +16 more
doaj   +1 more source

Homoclinic orbit and hidden attractor in the Lorenz-like system describing the fluid convection motion in the rotating cavity

open access: yes, 2014
In this paper a Lorenz-like system, describing the process of rotating fluid convection, is considered. The present work demonstrates numerically that this system, also like the classical Lorenz system, possesses a homoclinic trajectory and a chaotic ...
Kuznetsov, N. V.   +2 more
core   +1 more source

Non-Supersymmetric Attractors in $R^2$ Gravities

open access: yes, 2006
We investigate the attractor mechanism for spherically symmetric extremal black holes in a theory of general $R^2$ gravity in 4-dimensions, coupled to gauge fields and moduli fields.
A. Dabholkar   +29 more
core   +4 more sources

Superconformal inflationary α-attractors [PDF]

open access: yesJournal of High Energy Physics, 2013
14 pages, 2 ...
Kallosh, Renata   +2 more
openaire   +4 more sources

Coexisting patterns of population oscillations: the degenerate Neimark Sacker bifurcation as a generic mechanism

open access: yes, 2010
We investigate a population dynamics model that exhibits a Neimark Sacker bifurcation with a period that is naturally close to 4. Beyond the bifurcation, the period becomes soon locked at 4 due to a strong resonance, and a second attractor of period 2 ...
A. Pikovsky   +8 more
core   +1 more source

Stable Isotropic Cosmological Singularities in Quadratic Gravity [PDF]

open access: yes, 2007
We show that, in quadratic lagrangian theories of gravity, isotropic cosmological singularities are stable to the presence of small scalar, vector and tensor inhomogeneities. Unlike in general relativity, a particular exact isotropic solution is shown to
A. A. Starobinsky   +10 more
core   +3 more sources

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed   +5 more
wiley   +1 more source

Visual Analysis of Nonlinear Dynamical Systems: Chaos, Fractals, Self-Similarity and the Limits of Prediction

open access: yesSystems, 2016
Nearly all nontrivial real-world systems are nonlinear dynamical systems. Chaos describes certain nonlinear dynamical systems that have a very sensitive dependence on initial conditions.
Geoff Boeing
doaj   +1 more source

String attractors and combinatorics on words [PDF]

open access: yes, 2019
The notion of string attractor has recently been introduced in [Prezza, 2017] and studied in [Kempa and Prezza, 2018] to provide a unifying framework for known dictionary-based compressors.
Mantaci S.   +4 more
core  

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