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Three-nucleon forces (3NF) are investigated from two-flavor lattice QCD simulations. We utilize the Nambu-Bethe-Salpeter (NBS) wave function to determine two-nucleon forces (2NF) and 3NF in the same framework. As a first exploratory study,…

Quadrupole scans were used to characterize the LEDA RFQ beam. Experimental data were fit to computer simulation models for the rms beam size. The codes were found to be inadequate in accurately reproducing details of the wire scanner data.…

Beam alignment is a critical bottleneck in millimeter wave (mmWave) communication. An ideal beam alignment technique should achieve high beamforming (BF) gain with low latency, scale well to systems with higher carrier frequencies, larger…

信息论 · 计算机科学 2023-07-11 Yuqiang Heng , Jeffrey G. Andrews

Investigating physical models with photonic synthetic dimensions has been generating great interest in vast fields of science. The rapid developing thin-film lithium niobate (TFLN) platform, for its numerous advantages including high…

For wireless communications using linear large-scale antenna arrays, we define a receiving coordinate system and parameterization strategy to facilitate the study of the impact of three-dimensional position and rotation of the arrays on the…

信息论 · 计算机科学 2022-03-21 Liqin Ding , Erik G. Ström , Jiliang Zhang

We study two-dimensional (2D) solitons in the mean-field models of ultracold gases with long-range quadrupole-quadrupole interaction (QQI) between particles. The condensate is loaded into a deep optical-lattice (OL) potential, therefore the…

斑图形成与孤子 · 物理学 2015-06-18 Yongyao Li , Jingfeng Liu , Wei Pang , Boris A. Malomed

Multiple independent radio frequency (RF) beams find applications in communications, radio astronomy, radar, and microwave imaging. An $N$-point FFT applied spatially across an array of receiver antennas provides $N$-independent RF beams at…

统计方法学 · 统计学 2015-01-09 D. Suarez , R. J. Cintra , F. M. Bayer , A. Sengupta , S. Kulasekera , A. Madanayake

The main purpose of the present paper is to solve the thermodynamic inconsistencies that result when deriving equivalent micropolar models of periodic beam-lattice materials through standard continualization schemes. In fact, this technique…

经典物理 · 物理学 2021-04-22 Andrea Bacigalupo , Luigi Gambarotta

Despite significant advancements in terrestrial networks, inherent limitations persist in providing reliable coverage to remote areas and maintaining resilience during natural disasters. Multi-tier networks with low Earth orbit (LEO)…

网络与互联网体系结构 · 计算机科学 2025-05-20 Jiahui Li , Geng Sun , Zemin Sun , Jiacheng Wang , Yinqiu Liu , Ruichen Zhang , Dusit Niyato , Shiwen Mao

We study properties of two different atoms at a single optical lattice site at a heteronuclear atomic Feshbach resonance. We calculate the energy spectrum, the efficiency of rf association and the lifetime as a function of magnetic field…

This paper is concerned with two rather basic phenomena: the incoherent fluorescence spectrum of an atom driven by an intense laser field and the coupling of the atom to the (empty) modes of the radiation field. The sum of the many-photon…

量子物理 · 物理学 2007-05-23 Ulrich D. Jentschura , Joerg Evers , Christoph H. Keitel

I give an elementary introduction to the study of gauge theories coupled to fermions with many degrees of freedom. Besides their intrinsic interest, these theories are candidates for nonperturbative extensions of the Higgs sector of the…

高能物理 - 格点 · 物理学 2015-05-20 Thomas DeGrand

A compact adjustable focusing system for a 2 MeV H- RFQ Linac is designed, constructed and tested based on four permanent magnet quadrupoles (PMQ). A PMQ model is realised using finite element simulations, providing an integrated field…

加速器物理 · 物理学 2013-02-06 M. Nirkko , S. Braccini , A. Ereditato , I. Kreslo , P. Scampoli , M. Weber

We apply the background field (BF) method to Non-Relativistic QCD (NRQCD) on the lattice in order to determine the one-loop radiative corrections to the coefficients of the NRQCD action in a manifestly gauge-covariant manner by matching the…

高能物理 - 格点 · 物理学 2015-11-17 T. C. Hammant , A. G. Hart , G. M. von Hippel , R. R. Horgan , C. J. Monahan

We study the problem of folding of the regular triangular lattice in the presence of bending rigidity K and magnetic field h (conjugate to the local normal vectors to the triangles). A numerical study of the transfer matrix of the problem…

凝聚态物理 · 物理学 2007-05-23 P. Di Francesco , E. Guitter

The dynamical response of the Abrikosov vortex lattice in the presence of an oscillating driving field is calculated by constructing an analytical solution of the time-dependent Ginzburg-Landau equation. The solution is steady-state, and…

超导电性 · 物理学 2010-10-29 F. Pei-Jen Lin , Peter Matlock

We propose here that for a spin-imbalanced two-component attractive Fermi gas loaded in a 1D optical lattice in presence of an harmonic confining potential, the observation of the change in the double occupancy after a lattice depth…

量子气体 · 物理学 2010-09-15 A. Korolyuk , F. Massel , P. Törmä

Three-wave interactions in plasmas are described, in the framework of kinetic theory, by the quadratic response tensor (QRT). The cold-plasma QRT is a common approximation for interactions between three fast waves. Here, the first-order…

等离子体物理 · 物理学 2015-05-19 B. Layden , D. J. Percival , Iver H. Cairns , P. A. Robinson

During operation, the radio-frequency quadrupole (RFQ) of the LINAC4 at CERN is exposed to high electric fields, which can lead to vacuum breakdown. It is also subject to beam loss, which can cause surface modification, including…

Federated learning (FL) has been recognized as a viable distributed learning paradigm which trains a machine learning model collaboratively with massive mobile devices in the wireless edge while protecting user privacy. Although various…

信息论 · 计算机科学 2022-04-19 Yanmeng Wang , Yanqing Xu , Qingjiang Shi , Tsung-Hui Chang