Results 81 to 90 of about 48,835 (257)

Wave functions for SU(2) Hamiltonian lattice gauge theory [PDF]

Physical Review D, 2000
We study four dimensional SU(2) lattice gauge theory in the Hamiltonian formalism by Green's function Monte Carlo methods. A trial ground state wave function is introduced to improve the configuration sampling and we discuss the interplay between its complexity and the simulation systematic errors.
openaire   +2 more sources

Inhomogeneous coupling perturbations in hamiltonian lattice gauge theory

Nuclear Physics B, 1983
Abstract An inhomogeneous-coupling expansion of hamiltonian lattice gauge theory without fermion fields is presented. It is based upon a decomposition of the (color-)magnetic term of the Kogut-Susskind hamiltonian into two complementary plaquette sets { p 0 } and { p 1 }.
W.R. Moreau, N.I. Churcher, T. Kalotas
openaire   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source

Recent Advances in Hamiltonian Lattice Gauge Theory

, 1997
Review given at the Beijing Workshop on Experiemental and Theoretical Study of ...
Guo, Shuo-Hong, Luo, Xiang-Qian
openaire   +2 more sources

Resonant Interlayer Coupling in NbSe2‐Graphite Epitaxial Moiré Superlattices

Advanced Materials, EarlyView.
Combining angle‐resolved photoemission spectroscopy and density functional theory derived calculations, this work reveals strong interlayer coupling and moiré replicas of the graphite π states in molecular‐beam epitaxy grown van der Waals heterostructures of monolayer‐NbSe2/graphite, with implications for its collective phases that form. Abstract Moiré
Shu Mo, Ksenija Kovalenka, Sebastian Buchberger, Bruno K. Saika, Anugrah Azhar, Akhil Rajan, Andela Zivanovic, Yu‐Chi Yao, Rodion V. Belosludov, Matthew D. Watson, M Saeed Bahramy, Phil D.C. King   +11 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

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

Advanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza, Karol Strutyński, Shuai Fu, Yifan Chen, Natalia M. Padial, Isabel del Barrio Gómez, Carlos Martí‐Gastaldo, Andrei N. Khlobystov, Mischa Bonn, Hai I. Wang, Manuel Melle‐Franco, Aurelio Mateo‐Alonso   +11 more
wiley   +1 more source

Investigating the Structural Factors Influencing the Magnetic Interaction between Individual Copper Spins in the CuCu4 Metallacrown Complex, from Its Bulk Form to Its Adsorption on Au(111)

Advanced Materials Interfaces, EarlyView.
The Cu(II)[12‐MCCu(II)N(Shi)‐4] metallacrown complex (CuCu4) is studied to examine how geometric transformations affect magnetic coupling between copper spins by using ultraviolet photoemission spectroscopy and DFT calculations for the bulk phase and CuCu4 adsorbed on Au(111). While adsorption minimally affects tDOS, exchange coupling constants between
Ariyan Tavakoli, Stefan Lach, Frederik Pütz, Dominic Stephan, Anne Lüpke, Dominik Laible, Siegfried Kaidisch, Andreas Windischbacher, Eva Rentschler, Peter Puschnig, Hans‐Christian Schneider, Christiane Ziegler   +11 more
wiley   +1 more source

Gauge loop-string-hadron formulation on general graphs and applications to fully gauge fixed Hamiltonian lattice gauge theory

Journal of High Energy Physics
We develop a gauge invariant, Loop-String-Hadron (LSH) based representation of SU(2) Yang-Mills theory defined on a general graph consisting of vertices and half-links.
Ivan M. Burbano, Christian W. Bauer
doaj   +1 more source

Finite-element quantum field theory

, 1996
An alternative approach to lattice gauge theory has been under development for the past decade. It is based on discretizing the operator Heisenberg equations of motion in such a way as to preserve the canonical commutation relations at each lattice site.
Bender, Bender, Bender, Kimball A. Milton, Milton, Milton, Milton, Milton   +7 more
core   +1 more source