Results 81 to 90 of about 2,989 (204)

The nonlinear Dirac equation in Bose–Einstein condensates: I. Relativistic solitons in armchair nanoribbon optical lattices

New Journal of Physics, 2015
We present a thorough analysis of soliton solutions to the quasi-one-dimensional (quasi-1D) nonlinear Dirac equation (NLDE) for a Bose–Einstein condensate in a honeycomb lattice with armchair geometry.
L H Haddad, C M Weaver, Lincoln D Carr
doaj   +1 more source

Ultrasensitive Detection of Neurofilament Light in Plasma Using F(Ab’)2‐Modified Graphene Field‐Effect Biosensor

Small, EarlyView.
An antibody fragment (F(ab')2)‐modified graphene field‐effect transistor biosensor is developed for the ultrasensitive detection of neurofilament light chain in clinical plasma. By reducing the Debye screening effect, the platform achieves a 114% sensitivity increase and a fivefold lower detection limit compared to whole‐antibody approaches ...
Selvinaz Burcu Kizilates, Rica Asrosa, Lenart Senicar, Anuja Sharma, Seda Gungordu Er, Nisha Naeem, Ahmad Nizamuddin bin Muhammad Mustafa, Yang Wu, Neil Graham, Amanda Heslegrave, Mohan Edirisinghe, Antonio Lombardo, Elias Torres, Henrik Zetterberg, Sami Ramadan, David J. Sharp, Bing Li   +16 more
wiley   +1 more source

The electromagnetic field’s quantum nature and spin

AIP Advances
The interaction of the electron (charge) with the electromagnetic field is investigated using the minimum coupling prescription, in which the electron’s spin appears in the Dirac and Pauli–Schrödinger equations.
A. I. Arbab
doaj   +1 more source

Recognition of Spatiotemporal Feature Images of Zero‐Sequence Voltage for Single‐Phase High‐Impedance Ground Faults Under Complex Conditions

High Voltage, EarlyView.
ABSTRACT Diagnosing high‐impedance ground faults (HIGFs) in distribution networks is extremely challenging because high transition resistance significantly reduces electrical signal strength and unpredictable initial fault phase angles coupled with asymmetric voltage disturbances often lead to misclassification.
Zhengyang Li, Yijia Cao, Chun Chen, Weiyu Wang, Yansha Li, Jinglu Li   +5 more
wiley   +1 more source

On spectral stability of the nonlinear Dirac equation

Journal of Functional Analysis, 2016
We study the point spectrum of the nonlinear Dirac equation in any spatial dimension, linearized at one of the solitary wave solutions. We prove that, in any dimension, the linearized equation has no embedded eigenvalues in the part of the essential spectrum beyond the embedded thresholds.
Nabile Boussaïd, Andrew Comech
openaire   +2 more sources

Testing Distributional Granger Causality With Entropic Optimal Transport

Journal of Time Series Analysis, EarlyView.
ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley   +1 more source

Navigating Supply Shocks: Sector Resilience and Production Prices Through Stochastic Input–Output Modeling

Mathematical Finance, EarlyView.
ABSTRACT This study develops a novel multivariate stochastic framework for assessing systemic risks, such as climate and nature‐related shocks, within production or financial networks. By embedding a linear stochastic fluid network, interpretable as a generalized vector Ornstein–Uhlenbeck process, into the production network of interdependent ...
Giovanni Amici, Gianluca Fusai, Anna Maria Gambaro, Daniele Marazzina   +3 more
wiley   +1 more source

The nonrelativistic limit of the nonlinear Dirac equation [PDF]

Annales de l'Institut Henri Poincaré C, Analyse non linéaire, 1992
It is proved that there exist solutions of the nonlinear Dirac equation, smooth in time, on a time interval which is independent of c . Moreover after multiplication by a phase factor (dependent on c ) these solutions converge to the ...
openaire   +1 more source

Robust Mean–Variance Portfolio Optimization: Mean–Variance–Variance Criterion Versus Mean–Variance–Standard Deviation Criterion

Mathematical Finance, EarlyView.
ABSTRACT We study a dynamic portfolio optimization problem under the mean–variance–variance (M‐V‐V) criterion proposed by Maccheroni et al. It is an analogue of the Arrow–Pratt approximation to the well‐known smooth ambiguity model. Under the standard Black–Scholes framework, we derive fully explicit equilibrium investment strategies in which a DM's ...
David Landriault, Bin Li, Yuanyuan Zhang
wiley   +1 more source

An overview on linear and nonlinear Dirac equations

Discrete and Continuous Dynamical Systems, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Esteban, Maria J., Séré, Eric
openaire   +1 more source