搜索结果: 1-15 共查到“物理学 Curvature”相关记录29条 . 查询时间(0.109 秒)
Wriggling Microtubules Help Explain Coupling of “Active” Defects and Curvature（图）
Wriggling Microtubules Explain Coupling Active Defects Curvature
2017/10/26
Imagine a tiny donut-shaped droplet, covered with wriggling worms. The worms are packed so tightly together that they must locally line up with respect to each other. In this situation, we would say t...
Extrinsic curvature, geometric optics, and lamellar order on curved substrates
Two-dimensional layer model layer bend geometric constraints and physical effects
2014/12/19
When thermal energies are weak, two-dimensional lamellar structures confined on a curved substrate display complex patterns arising from the competition between layer bending and compression in the pr...
Physicists Heat Freestanding Graphene to Control Curvature of Ripples（图）
Graphene. Materials Dynamics Flexible circuits Condensed matter physics Microelectromechanical system
2014/10/9
FAYETTEVILLE, Ark. – An international team of physicists, led by a research group at the University of Arkansas, has discovered that heating can be used to control the curvature of ripples in freestan...
This is the main paper in a sequence in which, in collaboration with I. Rodnianski and J. Szeftel, we give a complete proof of the conjecture according to which the time of existence of solutions to t...
Discrete Schemes for Gaussian Curvature and Their Convergence
Discrete Gaussian curvature discrete mean curvature geometric
2012/8/7
In this paper, several discrete schemes for Gaussian curvature are sur-
veyed. The convergence property of a modi痚d discrete scheme for the
Gaussian curvature is proved. Furthermore, a new discrete ...
On Core and Curvature Corrections used in Straight-Line Vortex Filament Methods
Core and Curvature Corrections Straight-Line Vortex Filament Methods Computational Physics
2012/4/24
The convergence characteristics of two viscous core corrections as used in straight-line segmentation methods are rigorously analysed. These are \emph{curvature corrections} that account for the induc...
Constant curvature solutions of Grassmannian sigma models: (1) Holomorphic solutions
Sigma models Mathematical Physics Holomorphic solutions
2012/4/18
We present a general formula for the Gaussian curvature of curved holomorphic 2-spheres in Grassmannian manifolds G(m, n). We then show how to construct such solutions with constant curvature. We also...
All metrics have curvature tensors characterised by its invariants as a limit: the ε-property
curvature tensors ε-property General Relativity and Quantum Cosmology
2011/10/8
Abstract: We prove a generalisation of the $\epsilon$-property, namely that for any dimension and signature, a metric which is not characterised by its polynomial scalar curvature invariants, there is...
Full nonlinear growing and decaying modes of superhorizon curvature perturbations
Full nonlinear growing decaying modes superhorizon curvature perturbations
2010/12/21
We clarify the behavior of curvature perturbations in a nonlinear theory in case the inflaton tem-porarily stops during inflation. We focus on the evolution of curvature perturbation on superhorizon s...
Full nonlinear growing and decaying modes of superhorizon curvature perturbations
Full nonlinear growing decaying modes
2010/12/27
We clarify the behavior of curvature perturbations in a nonlinear theory in case the inflaton temporarily stops during inflation. We focus on the evolution of curvature perturbation on superhorizon sc...
All Bulk and Boundary Unitary Cubic Curvature Theories in Three Dimensions
All Bulk and Boundary Unitary Cubic Curvature Theories Three Dimensions
2010/12/23
We construct all the bulk and boundary unitary cubic curvature parity invariant gravity theories in three dimensions in (anti)-de Sitter spaces. For bulk unitarity, our construction is based on the p...
Curvature of the QCD phase transition line in a finite volume
the QCD phase transition line finite volume
2011/1/7
The curvature which characterizes the QCD phase transition at finite temperature and small values of the chemical potential is accessible to lattice simulations. The results for this quantity which ha...
Observational constraints on Chaplygin cosmology in a braneworld scenario with induced gravity and curvature effect
Observational constraints Chaplygin cosmology braneworld scenario
2010/12/27
We study cosmological dynamics and late-time evolution of an extended induced gravity braneworld scenario. In this scenario, curvature effects are taken into account via the Gauss-Bonnet term in the ...
Algebraic classification of spacetimes using discriminating scalar curvature invariants
Algebraic classification of spacetimes discriminating scalar curvature invariants
2010/12/27
The Weyl and Ricci tensors can be algebraically classified in a Lorentzian spacetime of arbitrary dimensions using alignment theory. Used in tandem with the boost weight decomposition and curvature op...
Curvature effect on nuclear pasta: Is it helpful for gyroid appearance?
Curvature effect nuclear pasta gyroid appearance
2011/1/6
In supernova cores and neutron star crusts, nuclei are thought to deform to rod-like and slablike shapes, which are often called “nuclear pasta.” We study the equilibrium properties of the nuclear pas...