Results 131 to 140 of about 512,547 (364)

On algebraic structures in supersymmetric principal chiral model

, 2009
Using the Poisson current algebra of the supersymmetric principal chiral model, we develop the algebraic canonical structure of the model by evaluating the fundamental Poisson bracket of the Lax matrices that fits into the rs matrix formalism of non ...
B. Haider, G. Arutyunov, G. Mandal, H.J. Vega de, H.J. Vega de, I. Bena, J.M. Evans, J.M. Evans, J.M. Evans, J.M. Maillet, J.M. Maillet, J.M. Maillet, L.F. Alday, L.L. Chau, M. Forger, M. Hassan, M. Hatsuda, M. Jimbo, M. Jimbo, S.G. Rajeev, S.G. Rajeev, T. Curtright, T. Curtright, T.L. Curtright, U. Saleem, U. Saleem   +25 more
core   +1 more source

Monoidal Categories and the Gerstenhaber Bracket in Hochschild Cohomology [PDF]

, 2014
Let A be an associative and unital algebra over a commutative ring K, such that A is K-projective. The Hochschild cohomology ring HH*(A) of A is, as a graded algebra, isomorphic to the Ext-algebra of A in the category of A-bimodules.
Reiner Hermann
semanticscholar   +1 more source

POISSON BRACKET IN CLASSICAL FIELD THEORY AS A DERIVED BRACKET [PDF]

International Journal of Geometric Methods in Modern Physics, 2008
We construct a Leibniz bracket on the space Ω• (Jk (π)) of all differential forms over the finite-dimensional jet bundle Jk (π). As an example, we write Maxwell equations with sources in the covariant finite-dimensional hamiltonian form.
openaire   +4 more sources

Anomalous Phonon Softening with Inherent Strain in Wrinkled Monolayer WSe2

Advanced Materials, EarlyView.
This study introduces the first discovery of a new local strain indicator, A2′′(Γ)$A_2^{^{\prime\prime}}( \Gamma )$ mode, for monolayer WSe2‐based excitonic applications including single photon emitter by using tip‐enhanced Raman spectroscopy. The correlative investigation with density functional perturbation theory provides the origin of the anomalous
Dong Hyeon Kim, Jaekak Yoo, Hyeong Chan Suh, Yo Seob Won, Sung Hyuk Kim, Dong‐Joon Yi, Byeong Geun Jeong, Chanwoo Lee, Dongki Lee, Ki Kang Kim, Seung Mi Lee, Eui Kwan Koh, Mun Seok Jeong   +12 more
wiley   +1 more source

Shear coordinate description of the quantised versal unfolding of D_4 singularity

, 2010
In this paper by using Teichmuller theory of a sphere with four holes/orbifold points, we obtain a system of flat coordinates on the general affine cubic surface having a D_4 singularity at the origin.
Bolibruch A A, Chekhov L O, Chekhov L O, Chekhov L O, Chekhov L O, Dubrovin B, Etingof P Ginzburg V, Fock V V, Fock V V, Garnier R, Hitchin N, Leonid Chekhov, Marta Mazzocco, Mazzocco M Vidunas R, Schlesinger L   +14 more
core   +1 more source

Measurement and comparison of bracket transfer accuracy of five indirect bonding techniques.

Angle Orthodontist, 2014
OBJECTIVE To measure and compare bracket transfer accuracy of five indirect bonding (IDB) techniques. MATERIALS AND METHODS Five IDB techniques were studied: double polyvinyl siloxane (double-PVS), double vacuum-form (double-VF), polyvinyl siloxane ...
Ana E. Castilla, J. Crowe, J. Ryan Moses, Mansen Wang, J. Ferracane, D. Covell   +5 more
semanticscholar   +1 more source

Designing Maximal Strength in Nanolamellar Eutectic High‐Entropy Alloys

Advanced Materials, EarlyView.
This study uses molecular dynamics simulations to guide the design of EHEAs with superior mechanical performance. The simulations reveal a peak tensile strength at a critical interphase boundary spacing. Below this spacing, the governing mechanism shifts from the Hall–Petch strengthening to dislocation multiplication–mediated softening. Guided by these
Weiming Ji, Shubo Gao, Asker Jarlöv, Xiaojun Shen, Yujia Tian, Mao See Wu, Huajian Gao, Kun Zhou   +7 more
wiley   +1 more source

Orthodontic Metallic Lingual Brackets: The Dark Side of the Moon of Bond Failures?

Journal of Functional Biomaterials, 2017
Lingual orthodontics, among both young and adult patients, increased in popularity during last years. The purposes of the present investigation were to evaluate the shear bond strength (SBS) values and Adhesive Remnant Index (ARI) scores of different ...
Maria Francesca Sfondrini, Paola Gandini, Andrea Gioiella, Feng Xiao Zhou, Andrea Scribante   +4 more
doaj   +1 more source

Torque expression capacity of 0.018 and 0.022 bracket slots by changing archwire material and cross section

Progress in orthodontics, 2014
BackgroundThe aim of this study is to calculate and compare the play and torque expression of 0.018 and 0.022 bracket slots when engaged with archwires of different size, cross section and material.MethodsEight orthodontic brackets, two of slot height 0 ...
Angela Arreghini, L. Lombardo, F. Mollica, G. Siciliani   +3 more
semanticscholar   +1 more source

Unravelling the Atomic Structure of a Metal‐Covalent Organic Framework Assembled from Ruthenium Metalloligands

Advanced Materials, Volume 37, Issue 13, April 2, 2025.
Metal‐covalent organic frameworks (MCOFs) are novel porous materials that exhibit the advantages of covalent and metal‐organic frameworks. However, it is extremely difficult to resolve their atomic structure and better understand their structure‐properties relation. This work utilizes a synergistic combination of advanced microscopy, spectroscopic, and
Seán Hennessey, Roberto González‐Gómez, Nicolás Arisnabarreta, Anna Ciotti, Jing Hou, Nadezda V. Tarakina, Andrey Bezrukov, Kunal S. Mali, Michael Zaworotko, Steven De Feyter, Max García‐Melchor, Pau Farràs   +11 more
wiley   +1 more source