Results 71 to 80 of about 2,612,717 (366)

Low-frequency discrete breathers in long-range systems without on-site potential [PDF]

, 2017
We propose a new mechanism of long-range coupling to excite low-frequency discrete breathers without the on-site potential. This mechanism is universal in long-range systems irrespective of the spatial boundary conditions, of topology of the inner degree
Doi, Yusuke, Yamaguchi, Yoshiyuki Y.
core   +2 more sources

A level-set-based topology optimisation of carpet cloaking devices with the boundary element method

Mechanical Engineering Journal, 2016
We investigate a topology optimisation based on the level set method for a design problem of carpet cloaking devices. In topology optimisation of carpet cloaking devices, we need to calculate the electromagnetic response in a semi-infinite domain. We use
Kenta NAKAMOTO, Hiroshi ISAKARI, Toru TAKAHASHI, Toshiro MATSUMOTO   +3 more
doaj   +1 more source

Multipartite entanglement and topology in holography

Journal of High Energy Physics, 2021
Starting from the entanglement wedge of a multipartite mixed state we describe a purification procedure which involves the gluing of several copies. The resulting geometry has non-trivial topology and a single oriented boundary for each original boundary
Jonathan Harper
doaj   +1 more source

Dynamical confinement in bosonized QCD2

, 1992
In the bosonized version of two dimensional theories non trivial boundary conditions (topology) play a crucial role. They are inevitable if one wants to describe non singlet states. In abelian bosonization, color is the charge of a topological current in
A. Ferrando, A. Ferrando, A. Ferrando, A. Patrascioiu, C. G. Callan, D. B. Kaplan, D. J. Gross, G. 't Hooft, G. 't Hooft, G. Bhattacharya, G. Segal, I. B. Frenkel, I. Zahed, J. Ellis, M. B. Einhorn, M. B. Halpern, M. B. Halpern, M. Partovi, P. Ginsparg, P. Mitra, R. C. Brower, R. C. Brower, S. Coleman, S. Coleman, S. Coleman, S. Coleman, S. Coleman, S. Huang, S. Mandelstam, T. P. Cheng, V. Baluni, V. Vento   +31 more
core   +2 more sources

Topological boundary modes in isostatic lattices [PDF]

Nature Physics, 2013
Frames, or lattices consisting of mass points connected by rigid bonds or central force springs, are important model constructs that have applications in such diverse fields as structural engineering, architecture, and materials science. The difference between the number of bonds and the number of degrees of freedom of these lattices determines the ...
Tom C. Lubensky, Charles L. Kane
openaire   +3 more sources

Boundary conductance in macroscopic bismuth crystals

Nature Communications, 2022
The topology of the surface states of a bismuth crystal remains an ongoing debate. Here, the authors observe surface electric conductivity with a magnetic field parallel to the two-dimensional boundary between the three-dimensional bismuth crystal and ...
Woun Kang, Felix Spathelf, Benoît Fauqué, Yuki Fuseya, Kamran Behnia   +4 more
doaj   +1 more source

Research in material distribution based on topology optimization in variable section segmented thermoelectric generators

Case Studies in Thermal Engineering
This paper investigates the material distribution of non-uniform cross-sectional segmented thermoelectric generators (STEG). Based on topology optimization methods, the material is reasonably allocated to enhance the output power and conversion ...
Qiuchen Fu, Yemao Wang, Liyao Xie, Yulong Zhao, Barkat Ali Bhayo   +4 more
doaj   +1 more source

Boundary Deformation Theory and Moduli Spaces of D-Branes [PDF]

, 1998
Boundary conformal field theory is the suitable framework for a microscopic treatment of D-branes in arbitrary CFT backgrounds. In this work, we develop boundary deformation theory in order to study the changes of boundary conditions generated by ...
Affleck, Affleck, Affleck, Andreas Recknagel, Bachas, Becker, Belavin, Bergman, Bianchi, Bianchi, Bianchi, Billó, Callan, Callan, Callan, Callan, Callan, Callan, Callan, Cardy, Cardy, Cardy, Cardy, Cardy, Chim, Connes, Connes, Dai, Di Vecchia, Dijkgraaf, Dijkgraaf, Dijkgraaf, Dorey, Douglas, Douglas, Douglas, Fendley, Fröhlich, Fuchs, Fuchs, Fuchs, Gava, Ginsparg, Ginsparg, Green, Green, Gubser, Hamermesh, Horowitz, Hussain, Hussain, Ishibashi, Lerche, Lesage, Lesage, Lewellen, Li, Ludwig, Maldacena, Ooguri, Oshikawa, Pasquier, Petkova, Petkova, Polchinski, Polchinski, Polchinski, Polchinski, Polchinski, Pradisi, Pradisi, Pradisi, Recknagel, Sagnotti, Sagnotti, Sen, Sen, Sen, Sen, Sen, Stanciu, Strominger, Volker Schomerus, Warner, Warner, Witten, Witten, Witten   +87 more
core   +5 more sources

Higher-order band topology [PDF]

Nature Reviews Physics, 2020
A conventional topological insulator (TI) has gapped bulk states but gapless edge states. The emergence of the gapless edge states is dictated by the bulk topological invariant of the insulator and the preservation of relevant symmetries.
Biye Xie, Hai-Xiao Wang, Xiujuan Zhang, P. Zhan, Jian‐Hua Jiang, Minghui Lu, Yan-Feng Chen   +6 more
semanticscholar   +1 more source

TOPOLOGY OPTIMIZATION METHOD BASED ON SIMP-MMC FOR STRUCTURE SIZE PRECISE CONTROL

Jixie qiangdu, 2022
With the development of structural topology optimization methods, some scholars had proposed strategies to integrate existing topology optimization methods to improve the manufacturability of topology optimization result.
ZHANG JunFeng, LIAO JingYu, LIU EnHai
doaj