نتایج جستجو برای: non topological

تعداد نتایج: 1377640  

2004
Ludde Edgren Niclas Sandström

We propose an algorithm for the construction of higher order gauge field theories from a superfield formulation within the Batalin-Vilkovisky formalism. This is a generalization of the superfield algorithm recently considered by Batalin and Marnelius. This generalization seems to allow for non-topological gauge field theories as well as alternative representations of topological ones. A five di...

2004
R. M. Kiehn

A concept of entropy production associated with continuous topolog-ical evolution is deduced (without statistics) from the fact that Cartan-Hilbert 1-form of Action defines a non-equilibrium symplectic system of Pfaff Topological dimension 2n+2. The differential entropy, dS, is composed of the interior product of the non-canonical components of momentum with the components of the differential v...

1998
R. M. KIEHN

The theory of classical electromagnetism is constructed in terms of two exterior differential systems, F − dA = 0, and J − dG = 0, which act as topological constraints on the variety of independent variables {x, y, z, t}. These two fundamental constraints lead to two other independent concepts of topological torsion, A^F, and topological spin, A^G, which are explicitly dependent upon the potent...

2016
Matthias Zeppelzauer Bartosz Zielinski Mateusz Juda Markus Seidl

We investigate topological descriptors for 3D surface analysis, i.e. the classification of surfaces according to their geometric fine structure. On a dataset of high-resolution 3D surface reconstructions we compute persistence diagrams for a 2D cubical filtration. In the next step we investigate different topological descriptors and measure their ability to discriminate structurally different 3...

Journal: :Science 2018
Hengyun Zhou Chao Peng Yoseob Yoon Chia Wei Hsu Keith A Nelson Liang Fu John D Joannopoulos Marin Soljačić Bo Zhen

The ideas of topology have found tremendous success in closed physical systems, but even richer properties exist in the more general open or dissipative framework. We theoretically propose and experimentally demonstrate a bulk Fermi arc that develops from non-Hermitian radiative losses in an open system of photonic crystal slabs. Moreover, we discover half-integer topological charges in the pol...

Journal: :Adv. Comput. Math. 2012
Michael Hintermüller Antoine Laurain Antonio A. Novotny

Abstract. Second-order topological expansions in electrical impedance tomography problems with piecewise constant conductivities are considered. First-order expansions usually consist of local terms typically involving the state and the adjoint solutions and their gradients estimated at the point where the topological perturbation is performed. In the case of second-order topological expansions...

2003
Ludde Edgren Niclas Sandström

We propose an algorithm for the construction of higher order gauge field theories from a superfield formulation within the Batalin-Vilkovisky formalism. This is a generalization of the superfield algorithm recently considered by Batalin and Marnelius. This generalization seems to allow for non-topological gauge field theories as well as alternative representations of topological ones. A five di...

2007
Sankar Das Sarma Michael Freedman Chetan Nayak Steven H. Simon Ady Stern

Sankar Das Sarma, Michael Freedman, Chetan Nayak, Steven H. Simon, Ady Stern Department of Physics, University of Maryland, College Park, MD 20742 Microsoft Station Q, University of California, Santa Barbara, CA 93108 Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547 Alcatel-Lucent, Bell Labs, 600 Mountain Avenue, Murray Hill, New Jersey 07974 Department ...

2006
Seungjoon Hyun Sang-Heon Yi

We consider non-compact branes in topological string theories on a class of Calabi-Yau spaces including the resolved conifold and its mirror. We compute the amplitudes of the insertion of non-compact Lagrangian branes in the A-model on the resolved conifold in the context of the topological vertex as well as the melting crystal picture. They all agree with each other and also agree with the res...

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