Results 51 to 60 of about 201,945 (296)
Topological isoconductance signatures in Majorana nanowires [PDF]
Scientific Reports, 2021 AbstractWe consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends.
M. de Souza +7 more
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Signature spectrum of positive braids [PDF]
arXiv, 2021 We derive a lower bound for all Levine-Tristram signatures of positive braid links, linear in terms of the first Betti number. As a consequence, we obtain upper and lower bounds on the ratio of fixed pairs of Levine-Tristram signature invariants, valid uniformly on all positive braid monoids.
arxiv
Topological signatures in the entanglement of a topological insulator-quantum dot hybrid
Scientific Reports, 2022 AbstractIn the present work, we consider a hybrid plexciton composed of a semiconductor quantum dot interacting with a topological insulator nanoparticle subject to an external magnetic field. Due to the topological magnetoelectricity of the nanoparticle, long-living plasmonic surface modes are induced, which are quantized and coupled with the quantum ...
L. A. Castro-Enríquez +2 more
openaire +3 more sources
Factoriality and the Pin-Reutenauer procedure [PDF]
Discrete Mathematics & Theoretical Computer Science, 2016 We consider implicit signatures over finite semigroups determined by sets of pseudonatural numbers. We prove that, under relatively simple hypotheses on a pseudovariety V of semigroups, the finitely generated free algebra for the largest such signature ...
J. Almeida, J. C. Costa, M. Zeitoun
doaj +1 more source
The maximum Levine-Tristram signature of torus knots [PDF]
arXiv, 2022 We prove that the maximum of the Levine-Tristram signature function of a torus knot satisfies a reduction formula analogous to a result by Gordon-Litherland-Murasugi for the classical signature.
arxiv
Topological Signatures in the Electronic Structure of Graphene Spirals [PDF]
Scientific Reports, 2013 Topology is familiar mostly from mathematics, but also natural sciences have found its concepts useful. Those concepts have been used to explain several natural phenomena in biology and physics, and they are particularly relevant for the electronic structure description of topological insulators and graphene systems.
H. Sevincli +5 more
openaire +6 more sources
Various L2-signatures and a topological L2-signature theorem [PDF]
High-dimensional manifold topology, Proceedings of the school held
in Trieste, May 21--June 8, 2001. Edited by F. T. Farrell and W. Luck.
362--399, World Sci. Publ., River Edge, NJ, 2003, 2002 For a normal covering over a closed oriented topological manifold we give a proof of the L2-signature theorem with twisted coefficients, using Lipschitz structures and the Lipschitz signature operator introduced by Teleman. We also prove that the L-theory isomorphism conjecture as well as the C^*_max-version of the Baum-Connes conjecture imply the L2 ...
arxiv +1 more source
Topological aspects of geometrical signatures of phase transitions [PDF]
Physical Review E, 1999 Certain geometric properties of submanifolds of configuration space are numerically investigated for classical lattice phi^4 models in one and two dimensions. Peculiar behaviors of the computed geometric quantities are found only in the two-dimensional case, when a phase transition is present.
Franzosi, Roberto +3 more
openaire +10 more sources
A new, unique signature of the true cusp [PDF]
Annales Geophysicae, 2001 The "cusp proper" is generally understood to be the region enclosed by the outermost magnetospheric field lines as they map to low altitudes. It is therefore a weak-field region with continuous contact with magnetosheath plasma.
W. R. Keith +2 more
doaj +1 more source
Signatures of Topological Phonons in Superisostatic Lattices
Physical Review Letters, 2019 Soft topological surface phonons in idealized ball-and-spring lattices with coordination number $z=2d$ in $d$ dimensions become finite-frequency surface phonons in physically realizable superisostatic lattices with $z>2d$. We study these finite-frequency modes in model lattices with added next-nearest-neighbor springs or bending forces at nodes with
Tom C. Lubensky, Olaf Stenull
openaire +5 more sources