Results 21 to 30 of about 1,506,135 (383)

Periodic-orbit theory of universal level correlations in quantum chaos [PDF]

open access: yes, 2009
Using Gutzwiller's semiclassical periodic-orbit theory, we demonstrate universal behavior of the two-point correlator of the density of levels for quantum systems whose classical limit is fully chaotic. We go beyond previous work in establishing the full
S. Müller   +4 more
semanticscholar   +1 more source

Orbital Magnetization in Periodic Insulators [PDF]

open access: yesPhysical Review Letters, 2005
submitted to PRL; signs corrected in Eqs. (11), (12), (19), and (20)
T. THONHAUSER   +3 more
openaire   +4 more sources

Periodic-orbit theory of universality in quantum chaos. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2005
We argue semiclassically, on the basis of Gutzwiller's periodic-orbit theory, that full classical chaos is paralleled by quantum energy spectra with universal spectral statistics, in agreement with random-matrix theory. For dynamics from all three Wigner-
S. Müller   +4 more
semanticscholar   +1 more source

Linear instability of periodic orbits of free period Lagrangian systems

open access: yesElectronic Research Archive, 2022
Minimizing closed geodesics on surfaces are linearly unstable. By starting with this classical Poincaré's instability result, in the present paper we prove a result that allows to deduce the linear instability of periodic solutions of autonomous ...
Alessandro Portaluri, Li Wu , Ran Yang
doaj   +1 more source

Bifurcations of a Homoclinic Orbit to Saddle-Center in Reversible Systems

open access: yesAbstract and Applied Analysis, 2012
The bifurcations near a primary homoclinic orbit to a saddle-center are investigated in a 4-dimensional reversible system. By establishing a new kind of local moving frame along the primary homoclinic orbit and using the Melnikov functions, the existence
Zhiqin Qiao, Yancong Xu
doaj   +1 more source

Global orbit of a complicated nonlinear system with the global dynamic frequency method

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
Global orbits connect the saddle points in an infinite period through the homoclinic and heteroclinic types of manifolds. Different from the periodic movement analysis, it requires special strategies to obtain expression of the orbit and detect the ...
Zhixia Wang   +3 more
doaj   +1 more source

Periodic Orbits and Warps [PDF]

open access: yesSymposium - International Astronomical Union, 1983
Orbit calculations were done in a rotating triaxial system with a density distribution in accordance with recent observations of spiral galaxies. A search was made for simple closed orbits which are tilted with respect to the plane of the galaxy. A family of stable prograde tilted orbits was found which can explain warps as stationary phenomena.
openaire   +3 more sources

Periodic-orbit theory of anderson localization on graphs [PDF]

open access: yesPhysical Review Letters, 1999
We present the first quantum system where Anderson localization is completely described within periodic-orbit theory. The model is a quantum graph analogous to an aperiodic Kronig-Penney model in one dimension. The exact expression for the probability to
Schanz, Smilansky
semanticscholar   +1 more source

Poincaré Map and Periodic Solutions of First-Order Impulsive Differential Equations on Moebius Stripe

open access: yesAbstract and Applied Analysis, 2013
This paper is mainly concerned with the existence, stability, and bifurcations of periodic solutions of a certain scalar impulsive differential equations on Moebius stripe.
Yefeng He, Yepeng Xing
doaj   +1 more source

Resonant Homoclinic Flips Bifurcation in Principal Eigendirections

open access: yesAbstract and Applied Analysis, 2013
A codimension-4 homoclinic bifurcation with one orbit flip and one inclination flip at principal eigenvalue direction resonance is considered. By introducing a local active coordinate system in some small neighborhood of homoclinic orbit, we get the ...
Tiansi Zhang, Xiaoxin Huang, Deming Zhu
doaj   +1 more source

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