Results 121 to 130 of about 113,833 (283)
A kinematic model of stick‐insect walking
Physiological Reports, 2019 Animal, and insect walking (locomotion) in particular, have attracted much attention from scientists over many years up to now. The investigations included behavioral, electrophysiological experiments, as well as modeling studies.
Tibor I. Tóth, Silvia Daun
doaj +1 more source
It is known that an abelian group $A$ and a $2$-cocycle $c:A \times A \to C$ yield a group ${\mathscr{H}}(A,C,c)$ which we call a Heisenberg group. This group, a central extension of $A$, is the archetype of a class~$2$ nilpotent group. In this note, we prove that under mild conditions, any class~$2$ nilpotent group $G$ is equivalent as an extension of
openaire +2 more sources
Advanced Quantum Technologies, EarlyView.High‐precision time‐delay measurements are demonstrated using frequency‐resolved Hong‐Ou Mandel (HOM) interference with weak coherent states. The method, by exploiting the quantum eraser phenomenon, achieves low uncertainty even for delays exceeding the photon coherence time, where traditional HOM interferometry fails, thus confirming theoretical ...
Francesco Di Lena +9 more
wiley +1 more source
Entanglement Swapping for Partially Entangled Qudits and the Role of Quantum Complementarity
Advanced Quantum Technologies, EarlyView.The entanglement swapping protocol is extended to partially entangled qudit states and analyzed through complete complementarity relations. Analytical bounds on the average distributed entanglement are established, showing how the initial local predictability and entanglement constrain the operational distribution.
Diego S. Starke +3 more
wiley +1 more source
Tubular Surfaces Around Timelike Biharmonic Curves in Lorentzian Heisenberg Group Heis3
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 In this paper, we describe a new method for constructing a tubular surface surrounding a timelike biharmonic curve in the Lorentzian Heisenberg group Heis3. Firstly, we characterize timelike biharmonic curves in terms of their curvature and torsion. Also,
Körpinar Talat, Turhan Essin
doaj +1 more source
Uncovering Exotic Topological Quantum States in Pure and Magnetically‐Doped Pyrite OsS2
Advanced Quantum Technologies, EarlyView.Pyrite‐structured OsS2 is identified as a fragile topological insulator with an unprecedented 602 meV bandgap, featuring helical surface states and van Hove singularities amenable to ARPES verification. Magnetic doping with Pd, Fe, Ni, or Co induces phase transitions to strong topological insulators, semimetals, 3D quantum anomalous Hall insulators ...
Ali Sufyan +9 more
wiley +1 more source
Minimality in topological groups and Heisenberg type groups [PDF]
, 2007 Menachem Shlossberg
openalex +1 more source
Crossing and Anticrossing of Exchange‐Coupled Molecular Spin Excitation Energy Levels
Small, EarlyView.Orientation matters: The excitation energy levels of exchange‐coupled spins of two nickelocene molecules anchored to superconducting electrodes are explored via inelastic electron tunneling spectroscopy. Depending on the tilt angle of the single‐molecule magnetic probe the levels cross or exhibit avoided crossing. Abstract The superconducting Pb tip of
Lorenz Meyer +4 more
wiley +1 more source
$C^{*}$-Rigidity of the Heisenberg Group
Publications of the Research Institute for Mathematical SciencesWe prove that the Heisenberg groups can be distinguished from the other connected and simply connected Lie groups via their group C^{*} -algebras.
Ingrid Beltiţă, Daniel Beltiţă
openaire +2 more sources
BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.ABSTRACT Objective To use low‐field MRI to produce reconstructions and 3D models of the cervix and to automate measurements for correlation with demographics and birth outcomes. Design Prospective cohort study. Setting KCL Advanced Imaging Centre, St Thomas's Hospital.
Simi Bansal +11 more
wiley +1 more source