Results 71 to 80 of about 509,496 (250)
CLRe: A Synergistic Dual‐Engine Framework for One‐Step Retrosynthesis Prediction
Advanced Science, EarlyView.CLRe uses a contrastive difficulty score to order pretrained seq2seq fine‐tuning for retrosynthesis. Reaction embeddings define the ranking score, and a cumulative easy‐to‐hard schedule expands from the easiest subset to the full training set while earlier examples remain active.
Tianhao Su +5 more
wiley +1 more source
Yukawa-Lorentz symmetry of interacting non-Hermitian birefringent Dirac fermions
SciPost PhysicsThe energy spectra of linearly dispersing gapless spin-3/2 Dirac fermions display birefringence, featuring two effective Fermi velocities, thus breaking the space-time Lorentz symmetry.
Sk Asrap Murshed, Bitan Roy
doaj +1 more source
Dirac Operator on the Quantum Sphere
, 2001 We construct a Dirac operator on the quantum sphere S2q which is covariant under the action of SUq(2), compatible with a chirality operator, has the correct commutative limit and also a familiar fuzzy sphere limit. In the fuzzy sphere limit it reduces to
Pinzul, A., Stern, Allen
core +1 more source
Advanced Science, EarlyView.Graphene iodide oxidation is regulated by Dirac cone engineering. Electrostatic gating tunes the Fermi level to control local iodide oxidation reaction activity, while magic‐angle twisted bilayer graphene creates flat‐band‐derived interfacial states that promote charge transfer and iodine‐species interaction, revealing a nanoscale route to electronic ...
Yang‐Sheng Lu +13 more
wiley +1 more source
On Huygens' principle for Dirac operators associated to electromagnetic fields
Anais da Academia Brasileira de Ciências, 2001 We study the behavior of massless Dirac particles, i.e., solutions of the Dirac equation with m = 0 in the presence of an electromagnetic field. Our main result (Theorem 1) is that for purely real or imaginary fields any Huygens type (in Hadamard's sense)
CHALUB FABIO A.C.C.
doaj
Electronic Chip‐Mimetic Medical Implants for Controllable Sonothermal Treatments
Advanced Science, EarlyView.Inspired by the thermal effect of working electronic chips, which consist of various heterostructures, an sonothermal‐responsive platform has been developed through constructing metal‐semiconductor interface on implants. Biofilm infection and deep vein thrombosis can be successfully treated by controllable ultrasound treatments.
Zhengdong Zhang +10 more
wiley +1 more source
Minimally doubled fermions and spontaneous chiral symmetry breaking
EPJ Web of Conferences, 2018 Chiral symmetry breaking in massless QCD is a very important feature in the current understanding of low energy physics. Low - lying Dirac modes are suitable to help us understand the spontaneous chiral symmetry breaking, since the formation of a non ...
Osmanaj (Zeqirllari) Rudina +1 more
doaj +1 more source
Transparent Topological Meta‐Diplexer via Tightly Confined Valley Surface States
Advanced Science, EarlyView.An optically transparent topological metasurface supporting tightly confined valley surface states enables robust and flexible wave routing in an ultrathin platform. A compact transparent meta‐diplexer with spatially and spectrally separated channels is realized, while communication experiments verify high‐fidelity signal transmission, opening new ...
Sijie Li +5 more
wiley +1 more source
Dirac operator spectrum in tubes and layers with a zigzag-type boundary. [PDF]
Lett Math Phys, 2022 Exner P, Holzmann M.
europepmc +1 more source