Results 11 to 20 of about 3,455,071 (307)

GTI-space : the space of generalized topological indices [PDF]

open access: yes, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
Matamala, A.R.   +5 more
core   +4 more sources

Spin pumping in ferromagnet-topological insulator-ferromagnetheterostructures [PDF]

open access: yes, 2015
Topological insulators (TIs) are enticing prospects for the future of spintronics due to their large spin-orbit coupling and dissipationless, counter-propagating conduction channels in the surface state.
Baker, A. A.   +8 more
core   +1 more source

Category Theory for Autonomous and Networked Dynamical Systems

open access: yesEntropy, 2019
In this discussion paper we argue that category theory may play a useful role in formulating, and perhaps proving, results in ergodic theory, topogical dynamics and open systems theory (control theory). As examples, we show how to characterize Kolmogorov&
Jean-Charles Delvenne
doaj   +1 more source

DEFINABLE TOPOLOGICAL DYNAMICS [PDF]

open access: yesThe Journal of Symbolic Logic, 2017
AbstractFor a groupGdefinable in a first order structureMwe develop basic topological dynamics in the category of definableG-flows. In particular, we give a description of the universal definableG-ambit and of the semigroup operation on it. We find a natural epimorphism from the Ellis group of this flow to the definable Bohr compactification ofG, that ...
openaire   +3 more sources

Aspects of Topological String Theory [PDF]

open access: yes, 2008
Two aspects of the topological string and its applications are considered in this thesis. Firstly, non-perturbative contributions to the OSV conjecture relating four-dimensional extremal black holes and the closed topological string partition function ...
Cook, Paul Langabi Hogan
core   +1 more source

Quantum Dynamical Characterization and Simulation of Topological Phases With High-Order Band Inversion Surfaces

open access: yesPRX Quantum, 2021
How to characterize topological quantum phases is a fundamental issue in the broad field of topological matter. From a dimension reduction approach, we propose the concept of high-order band inversion surfaces (BISs), which enable the optimal schemes to ...
Xiang-Long Yu   +5 more
doaj   +1 more source

Effects of spin symmetry breaking in topological insulators [PDF]

open access: yes, 2015
Topological insulators are one of the most thoroughly investigated systems in condensed matter physics over the last years. In these systems, a prominent role is inevitably taken by time-reversal symmetry, which leads to Kramers theorem and symmetry ...
Orth, Christoph
core   +1 more source

Topological dynamics on hyperspaces

open access: yesApplied General Topology, 2010
In this paper we wish to relate the dynamics of the base map to the dynamics of the induced map. In the process, we obtain conditions on the endowed hyperspace topology under which the chaotic behaviour of the map on the base space is inherited by the ...
Puneet Sharma, Anima Nagar
doaj   +1 more source

Dynamical signatures of symmetry protected topology following symmetry breaking

open access: yesPhysical Review Research, 2021
We investigate topological signatures in the short-time nonequilibrium dynamics of symmetry protected topological (SPT) systems starting from initial states which break a protecting symmetry.
Jacob A. Marks   +2 more
doaj   +1 more source

Topological structure of the magnetic solar corona [PDF]

open access: yes, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

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