Results 41 to 50 of about 9,559,098 (362)

A regime of linear stability for the Einstein-scalar field system with applications to nonlinear Big Bang formation [PDF]

, 2014
We linearize the Einstein-scalar field equations, expressed relative to constant mean curvature (CMC)-transported spatial coordinates gauge, around members of the well-known family of Kasner solutions on $(0,\infty) \times \mathbb{T}^3$.
I. Rodnianski, Jared Speck
semanticscholar   +1 more source

Analysis Modulation Instability and Parametric Effect on Soliton Solutions for M-Fractional Landau–Ginzburg–Higgs (LGH) Equation Through Two Analytic Methods

Fractal and Fractional
This manuscript studies the M-fractional Landau–Ginzburg–Higgs (M-fLGH) equation in comprehending superconductivity and drift cyclotron waves in radially inhomogeneous plasmas, especially for coherent ion cyclotron wave propagation, aiming to explore the
Mohamed Abdalla, Md. Mamunur Roshid, Mahtab Uddin, Mohammad Safi Ullah   +3 more
doaj   +1 more source

Flow-induced buckling of elastic microfilaments with non-uniform bending stiffness

Frontiers in Soft Matter, 2023
Buckling plays a critical role in the transport and dynamics of elastic microfilaments in Stokesian fluids. However, previous work has only considered filaments with homogeneous structural properties.
Thomas Nguyen, Harishankar Manikantan
doaj   +1 more source

World-sheet Stability of (0,2) Linear Sigma Models [PDF]

, 2003
We argue that two-dimensional (0,2) gauged linear sigma models are not destabilized by instanton generated world-sheet superpotentials. We construct several examples where we show this to be true.
A. A. Abrikosov, A. A. Penin, Anirban Basu, E. Silverstein, E. Tomboulis, E. Witten, F. Cachazo, H. B. Nielsen, I. Affleck, J. Distler, J. Distler, J. Distler, J. Distler, J.-L. Gervais, K. Fujikawa, K. Konishi, K.-i. Konishi, M. Dine, M. Dine, N. K. Nielsen, S. R. Coleman, Savdeep Sethi   +21 more
core   +2 more sources

Linear stability in billiards with potential

, 1996
A general formula for the linearized Poincar\'e map of a billiard with a potential is derived. The stability of periodic orbits is given by the trace of a product of matrices describing the piecewise free motion between reflections and the contributions ...
Abraham R, Arnold V I, Berglund N, Berry M V, Birkhoff G D, Bunimovich L A, Bäcker A, Chaplygin S A, Dullin H R, Eckhardt B, Greene J M, Gutzwiller M C, Hayli A, Holger R Dullin, Hénon M, Jacobi C G J, Korsch H J, Kozlov V V, Lazutkin Y F, Liverani C, Meplan O, Meyer K, Meyer K R, Meyer N, Richter P H, Rimmer M J, Robnik M, Robnik M, Schmidt D, Siegel C L, Sifter P, Sinai Y G, Wojtkowski M P, Wojtkowski M P   +33 more
core   +1 more source

Linear Stability of a Combined Convective Flow in an Annulus

Fluids, 2023
Linear stability analysis of a combined convective flow in an annulus is performed in the paper. The base flow is generated by two factors: (a) different constant wall temperatures and (b) heat release as a result of a chemical reaction that takes place ...
Armands Gritsans, Valentina Koliskina, Andrei Kolyshkin, Felix Sadyrbaev   +3 more
doaj   +1 more source

Numerical methods for solving nonlinear Volterra integro-differential equations based on Hermite–Birkhoff interpolation [PDF]

Iranian Journal of Numerical Analysis and Optimization, 2020
We introduce a new family of multivalue and multistage methods based on Hermite–Birkhoff interpolation for solving nonlinear Volterra integro differential equations.
S. Fazeli
doaj   +1 more source

Stability of non-linear integrable accelerator

, 2011
The stability of non-linear Integrable Optics Test Accelerator (IOTA) model was tested. The area of the stable region in transverse coordinates and the maximum attainable tune spread were found as a function of non-linear lens strength.
/Fermilab, /Moscow, MIPT, Batalov, I., Valishev, A.   +3 more
core   +2 more sources

Dynamics of self-sustained asynchronous-irregular activity in random networks of spiking neurons with strong synapses

Frontiers in Computational Neuroscience, 2014
Random networks of integrate-and-fire neurons with strong current-based synapses can, unlike previously believed, assume stable states of sustained asynchronous and irregular firing, even without external random background or pacemaker neurons.We analyze
Birgit eKriener, Birgit eKriener, Håkon eEnger, Håkon eEnger, Tom eTetzlaff, Tom eTetzlaff, Hans Ekkehard ePlesser, Marc-Oliver eGewaltig, Gaute T Einevoll, Gaute T Einevoll   +9 more
doaj   +1 more source

Dynamical stability criterion for inhomogeneous quasi-stationary states in long-range systems

, 2010
We derive a necessary and sufficient condition of linear dynamical stability for inhomogeneous Vlasov stationary states of the Hamiltonian Mean Field (HMF) model.
Alessandro Campa, Antonov V A, Arnol’d V I, Arnol’d V I, Balescu R, Bartholomew P, Binney J, Campa A, Chavanis P H, Chavanis P H, Chavanis P H Campa A, Dauxois T, Ellis R, Elskens Y, Inagaki S, Konishi T, Lemou M Méhats F Raphael P, Lynden-Bell D, Nicholson D R, Pierre-Henri Chavanis, Tremaine S   +20 more
core   +3 more sources