Results 151 to 160 of about 873,854 (287)

Recent Advances in Dielectric Chiral Metasurfaces

Advanced Physics Research, EarlyView.
This review article mainly focuses on the recent advances in dielectric chiral metasurfaces, which exhibit remarkable optical chirality. Many new physical conceptions will be introduced during the fast development of the dielectric chiral metasurfaces, such as chiral quasi‐BIC, chiral guided modes, and nonlocal metasurfaces.
Zhipeng Hu, Yuwei Sun, Hongguang Dong, Houxin Fan, Kaige Ding, Yi Jin, Sailing He   +6 more
wiley   +1 more source

Hamiltonian Approach to QCD in Coulomb Gauge: A Survey of Recent Results

Advances in High Energy Physics, 2018
We report on recent results obtained within the Hamiltonian approach to QCD in Coulomb gauge. Furthermore this approach is compared to recent lattice data, which were obtained by an alternative gauge-fixing method and which show an improved agreement ...
H. Reinhardt, G. Burgio, D. Campagnari, E. Ebadati, J. Heffner, M. Quandt, P. Vastag, H. Vogt   +7 more
doaj   +1 more source

Path integral on a group manifold and the lattice gauge theory Hamiltonian

Zeitschrift für Physik C Particles and Fields, 1988
For a quantum mechanical system living on the manifold of a compact simple Lie group we present explicit formulae for the quantum corrections, both in the Hamiltonian and, for the most common time discretization, in the path integral. As a special application of this rather general procedure, we compare, for lattice gauge theories, the path integral ...
Jochen Bartels, N. K. Falck
openaire   +2 more sources

Fast and scalable inference for spatial extreme value models

Canadian Journal of Statistics, EarlyView.
Abstract The generalized extreme value (GEV) distribution is a popular model for analyzing and forecasting extreme weather data. To increase prediction accuracy, spatial information is often pooled via a latent Gaussian process (GP) on the GEV parameters. Inference for GEV‐GP models is typically carried out using Markov Chain Monte Carlo (MCMC) methods,
Meixi Chen, Reza Ramezan, Martin Lysy
wiley   +1 more source

Symmetric Gapped Interfaces of SPT and SET States: Systematic Constructions

Physical Review X, 2018
Symmetry-protected topological (SPT) states have boundary ’t Hooft anomalies that obstruct the effective boundary theory realized in its own dimension with UV completion and with an on-site G-symmetry.
Juven Wang, Xiao-Gang Wen, Edward Witten
doaj   +1 more source

Strain gauge fields for rippled graphene membranes under central mechanical load: an approach beyond first-order continuum elasticity

, 2013
We study the electronic properties of rippled freestanding graphene membranes under central load from a sharp tip. To that end, we develop a gauge field theory on a honeycomb lattice valid beyond the continuum theory.
Barraza-Lopez, Salvador, Horvath, Cedric, Sanjuan, Alejandro A. Pacheco, Sloan, James V., Wang, Zhengfei   +4 more
core   +1 more source

Boundary conditions and universal finite‐size scaling for the hierarchical |φ|4$|\varphi |^4$ model in dimensions 4 and higher

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We analyse and clarify the finite‐size scaling of the weakly‐coupled hierarchical n$n$‐component |φ|4$|\varphi |^4$ model for all integers n≥1$n \ge 1$ in all dimensions d≥4$d\ge 4$, for both free and periodic boundary conditions. For d>4$d>4$, we prove that for a volume of size Rd$R^{d}$ with periodic boundary conditions the infinite‐volume ...
Emmanuel Michta, Jiwoon Park, Gordon Slade   +2 more
wiley   +1 more source

Exponential Improvements in the Simulation of Lattice Gauge Theories Using Near-Optimal Techniques

PRX Quantum
We report a first-of-its-kind analysis on post-Trotter simulation of U(1), SU(2), and SU(3) lattice gauge theories including fermions in arbitrary spatial dimension.
Mason L. Rhodes, Michael Kreshchuk, Shivesh Pathak   +2 more
doaj   +1 more source

Electrical Conductivities and Low Frequency Opacities in the Warm Dense Matter Regime

Contributions to Plasma Physics, EarlyView.
ABSTRACT In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average‐atom approximation and of different models for calculating opacities, such as the Ziman or Ziman–Evans models is discussed and the results compared to ab initio simulations.
Mikael Tacu, Jean‐Christophe Pain, Matthias Pautard, Christophe Blancard   +3 more
wiley   +1 more source

Optimization of Trial Wave Functions for Hamiltonian Lattice Models

, 1999
We propose a new Monte Carlo algorithm for the numerical study of general lattice models in Hamiltonian form. The algorithm is based on an initial Ansatz for the ground state wave function depending on a set of free parameters which are dynamically ...
Beccaria, Matteo
core   +1 more source