Results 71 to 80 of about 12,182,554 (372)
Does the attractive Hubbard model support larger persistent currents than the repulsive one ? [PDF]
, 1994 We consider a one-dimensional Hubbard model in the presence of disorder. We compute the charge stiffness for a mesoscopic ring, as a function of the size $L$, which is a measure of the permanent currents.
A. Müller-Groeling +35 more
core +3 more sources
Persistent currents in Dirac fermion rings [PDF]
Physical Review B, 2013 18 pages, 14 ...
Sticlet, Doru +2 more
openaire +3 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim +8 more
wiley +1 more source
Influences of various space current systems on the geomagnetic field in near-Earth space
Earth and Planetary Physics, 2023 Ground and space-based observations of the geomagnetic field are usually a superposition of different sources from the Earth’s core, lithosphere, ocean, ionosphere, and magnetosphere, and also from field-aligned currents coupling the ionosphere and ...
YaBing Wang +8 more
doaj +1 more source
Stroboscopic wave packet description of time-dependent currents through ring-shaped nanostructures
, 2013 We present an implementation of a new method for explicit simulations of time-dependent electric currents through nanojunctions. The method is based on unitary propagation of stroboscopic wave packet states and is designed to treat open systems with ...
Bokes, P., Konôpka, M.
core +1 more source
Persistent and radiation-induced currents in distorted quantum rings [PDF]
, 2005 Persistent and radiation-induced currents in distorted narrow quantum rings are theoretically investigated. We show that ring distorsions can be described using a geometrical potential term.
Carlo Piermarocchi +8 more
core +3 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter +17 more
wiley +1 more source
Zhongguo yiliao qixie zazhiObjectiveTo investigate the impact of different iterative cone beam CT (iCBCT) scanning beam currents from a ring-mounted linac on synthetic CT image quality for lung adaptive radiotherapy under lung scanning protocol. MethodsThe CIRS lung motion phantom
Ruifeng ZHAO, Bin SU, Xiaofei JIANG
doaj +1 more source
Current Correlations in a Quantum Dot Ring: A Role of Quantum Interference
Entropy, 2019 We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electrodes.
Bogdan R. Bułka, Jakub Łuczak
doaj +1 more source
Dynamics of automorphisms on compact K\"ahler manifolds [PDF]
, 2010 We study holomorphic automorphisms on compact K\"ahler manifolds having simple actions on the Hodge cohomology ring. We show for such automorphisms that the main dynamical Green currents admit complex laminar structures (woven currents) and the Green ...
De Thélin, Henry, Dinh, Tien-Cuong
core