Results 51 to 60 of about 344,178 (328)

Topological boundary modes in jammed matter [PDF]

Soft Matter, 2016
Granular matter at the jamming transition is poised on the brink of mechanical stability, and hence it is possible that these random systems have topologically protected surface phonons. Studying two model systems for jammed matter, we find states that exhibit distinct mechanical topological classes, protected surface modes, and ubiquitous Weyl points.
Tom C. Lubensky, Olaf Stenull, Daniel M. Sussman   +2 more
openaire   +5 more sources

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

Nested defects on the boundary of topological superconductors [PDF]

Physical Review B, 2016
11 pages, 9 ...
Adil A. Gangat, Adil A. Gangat, James de Lisle, Jiannis K. Pachos, Giandomenico Palumbo, Giandomenico Palumbo   +5 more
openaire   +5 more sources

A Novel Mesh Quality Improvement Method for Boundary Elements

Journal of Applied Mathematics, 2012
In order to improve the boundary mesh quality while maintaining the essential characteristics of discrete surfaces, a new approach combining optimization-based smoothing and topology optimization is developed. The smoothing objective function is modified,
Hou-lin Liu, Cui Dai, Liang Dong, Ming-gao Tan   +3 more
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

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

Casimir Effect and Global Theory of Boundary Conditions

, 2006
The consistency of quantum field theories defined on domains with external borders imposes very restrictive constraints on the type of boundary conditions that the fields can satisfy.
Asorey, M., Garcia-Alvarez, D., Munoz-Castaneda, J. M.   +2 more
core   +2 more sources

Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons [PDF]

, 1997
We examine counterparts of the Reissner-Nordstrom-anti-de Sitter black hole spacetimes in which the two-sphere has been replaced by a surface Sigma of constant negative or zero curvature.
A. Ashtekar, A. Ashtekar, A. Chamblin, B. Bertotti, B. Carter, B. Carter, B. F. Whiting, B. F. Whiting, C. A. Allendoerfer, C. G. Huang, C. W. Misner, D. Kramer, D. N. Page, D. R. Brill, D. R. Brill, D. R. Brill, Dieter R. Brill, G. Galloway, H. Nariai, H. W. Braden, I. Robinson, J. A. Wolf, J. D. Brown, J. D. Brown, J. D. Brown, J. L. Friedman, J. Louko, J. Louko, J. Louko, J. Louko, J. P. S. Lemos, J. P. S. Lemos, J. P. S. Lemos, J. W. York, Jorma Louko, K. A. Bronnikov, K. Lake, L. E. Reichl, L. F. Abbott, M. Bañados, M. Bañados, M. Henneaux, M. Spivak, M. Walker, P. C. W. Davies, P. C. W. Davies, P. T. Chrusciel, Peter Peldán, R. B. Mann, R. M. Wald, R.-G. Cai, S. Bose, S. Carlip, S. Nag, S. W. Hawking, S. W. Hawking, S. Åminneborg, T. Jacobson, T. Levi-Civita   +58 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