Results 41 to 50 of about 26,422 (206)

Supersolid and pair correlations of the extended Jaynes-Cummings-Hubbard model on triangular lattices

, 2019
We study the extended Jaynes-Cummings-Hubbard model on triangular cavity lattices and zigzag ladders. By using density-matrix renormalization group methods, we observe various types of solids with different density patterns and find evidence for light ...
Greschner, Sebastian, Guo, Lijuan, Zhang, Wanzhou, Zhu, Siyu   +3 more
core   +2 more sources

A low-energy effective model for the S=1/2 Kagome-triangular-strip Heisenberg model

AIP Advances, 2018
We study low-energy properties of the S=1/2 kagome-triangular-strip Heisenberg model. Using exact diagonalization, we calculate magnetization curves of the model in the ferromagnetic kagome coupling regime, where the singlet ground state and 1/3 plateau ...
Kouichi Okunishi, Yoshitaka Onozato, Kouichi Seki   +2 more
doaj   +1 more source

Quantum Simulations with Complex Geometries and Synthetic Gauge Fields in a Trapped Ion Chain

PRX Quantum, 2020
In recent years, arrays of atomic ions in a linear radio-frequency trap have proven to be a particularly successful platform for quantum simulation. However, a wide range of quantum models and phenomena have, so far, remained beyond the reach of such ...
Tom Manovitz, Yotam Shapira, Nitzan Akerman, Ady Stern, Roee Ozeri   +4 more
doaj   +1 more source

Critical behavior of Josephson-junction arrays at f=1/2

, 1995
The critical behavior of frustrated Josephson-junction arrays at $f=1/2$ flux quantum per plaquette is considered. Results from Monte Carlo simulations and transfer matrix computations support the identification of the critical behavior of the square and
Bastiaansen, Benedict, Berge, Chakrabarti, Choi, Choi, den Nijs, Eikmans, Enzo Granato, Fisher, Foda, Forrester, Forrester, Forrester, Garland, Geerligs, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Granato, Grest, Halsey, J.M. Kosterlitz, Kardar, Knops, Korshunov, Kosterlitz, Larkin, Lee, Lee, Lee, M.P. Nightingale, Mazzeo, Miyashita, Nattermann, Nicolaides, Nightingale, Olsson, Ramirez-Santiago, Ramirez-Santiago, Rubinstein, Teitel, Teitel, Thijssen, Thijssen, van der Zant, Villain, Yosefin   +55 more
core   +2 more sources

Programmable DNA‐Peptide Hybrid Nanostructures for Potent Neutralization of Multiple Influenza a Virus Subtypes

Advanced Functional Materials, EarlyView.
A multivalent antiviral platform based on honeycomb‐shaped DNA nanostructures (HC–Urumin) is developed to enhance the potency and breadth of the host defense peptide Urumin. Through spatially patterned trimeric presentation, HC–Urumin disrupts influenza A virus entry, improves cell viability, and reduces disease severity in vivo‐offering a modular and ...
Saurabh Umrao, Abhisek Dwivedy, Payton L. Haak, Dhanush Gandavadi, Laurie A. Rund, Chi Chen, Vineetha Mareddy, Lifeng Zhou, Jinwei Duan, Ying Fang, Andrew J. Steelman, Xing Wang   +11 more
wiley   +1 more source

Ferrimagnetic mixed-spin ladders in weak and strong coupling limits

, 2004
We study two similar spin ladder systems with the ferromagnetic leg coupling. First model includes two sorts of spins, s= 1/2 and s= 1, and the second model comprises only s=1/2 legs coupled by a "triangular" rung exchange.
A. O. Gogolin, D. N. Aristov, E. M. Lifshitz, H. J. Schulz, M. N. Kiselev, N. B. Ivanov   +5 more
core   +1 more source

Multibit Ferroelectric HfZrO Memcapacitor for Non‐Volatile Analogue Memory and Reconfigurable Electronics

Advanced Functional Materials, EarlyView.
Ferroelectric memcapacitors enable non‐volatile, voltage‐programmable capacitance tuning for adaptive electronics. A TiN/HfZrO/TiN device stack demonstrates more than eight stable capacitance states within a 24 pF memory window in compact 60 ×$\times$ 60 μm2$\umu{\rm m}^{2}$ devices at low operating voltages.
Deepika Yadav, Spyros Stathopoulos, Patrick Foster, Andreas Tsiamis, Mohamed Awadein, Hannah Levene, Themis Prodromakis   +6 more
wiley   +1 more source

Quantum Fluctuation-Induced Phase Transition in S=1/2 XY-like Heisenberg Antiferromagnets on the Triangular Lattice

, 2004
The selection of the ground state among nearly degenerate states due to quantum fluctuations is studied for the S=1/2 XY-like Heisenberg antiferromagnets on the triangular lattice in the magnetic field applied along the hard axis, which was first pointed
Cabra D. C., Chubukov A. V., Henley C. L., Hieida Y., Honecker A., Honecker A., Jacobs A. E., Kawamura H., Kawamura H., Lee D.-H., Majumdar C. K., Miyashita S., Miyashita S., Miyashita S., Motokawa M., Nikuni T., Nikuni T., Okunishi K., Shiba H., Watarai S., Weber H. B., White S. R.   +21 more
core   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source

Calculating Insurance Claim Reserves with an Intuitionistic Fuzzy Chain-Ladder Method

Mathematics
Estimating loss reserves is a crucial activity for non-life insurance companies. It involves adjusting the expected evolution of claims over different periods of active policies and their fluctuations. The chain-ladder (CL) technique is recognized as one
Jorge De Andrés-Sánchez
doaj   +1 more source