Results 71 to 80 of about 517,280 (335)

A Perturbative Construction of Lattice Chiral Fermions [PDF]

open access: yes, 1995
We perform a renormalization group transformation to construct a lattice theory of chiral fermions. The field variables of the continuum theory are averaged over hypercubes to define lattice fields. Integrating out the continuum variables in perturbation
't Hooft   +43 more
core   +2 more sources

Random lattice field theory: General formulation

open access: yesNuclear Physics B, 1982
A new type of lattice field theory is formulated in which the sites are chosen randomly in space. An algorithm is given for linking nearby sites; these links form the edges of non-overlapping simplices which fill the entire volume. All physical quantities averaged over such a lattice can therefore be translationally and rotationally symmetric.
N. H. Christ, R. Friedberg, T. D. Lee
openaire   +1 more source

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye   +6 more
wiley   +1 more source

Gradient flows without blow-up for Lefschetz thimbles

open access: yesJournal of High Energy Physics, 2017
We propose new gradient flows that define Lefschetz thimbles and do not blow up in a finite flow time. We study analytic properties of these gradient flows, and confirm them by numerical tests in simple examples.
Yuya Tanizaki   +2 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

The chirally rotated Schrödinger functional: theoretical expectations and perturbative tests

open access: yesJournal of High Energy Physics, 2016
The chirally rotated Schrödinger functional (χSF) with massless Wilson-type fermions provides an alternative lattice regularization of the Schrödinger functional (SF), with different lattice symmetries and a common continuum limit expected from ...
Mattia Dalla Brida   +2 more
doaj   +1 more source

Three-particle quantization condition in a finite volume: 2. General formalism and the analysis of data

open access: yesJournal of High Energy Physics, 2017
We derive the three-body quantization condition in a finite volume using an effective field theory in the particle-dimer picture. Moreover, we consider the extraction of physical observables from the lattice spectrum using the quantization condition.
Hans-Werner Hammer   +2 more
doaj   +1 more source

Exact Lattice Supersymmetry from Topological Field Theory [PDF]

open access: yes, 2003
We discuss the connection between supersymmetric field theories and topological field theories and show how this connection may be used to construct local lattice field theories which maintain an exact supersymmetry.
Catterall, Simon
core   +2 more sources

High Precision Simulation Techniques for Lattice Field Theory

open access: yes, 1992
An overview is given over the recently developed and now widely used Monte Carlo algorithms with reduced or eliminated critical slowing down. The basic techniques are overrelaxation, cluster algorithms and multigrid methods.
Wolff, Ulli
core   +2 more sources

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