Results 101 to 110 of about 347,783 (331)

Topology of critical points in boundary matrix duals

Journal of High Energy Physics
Computation of topological charges of the Schwarzschild and charged black holes in AdS in canonical and grand canonical ensembles allows for a classification of the phase transition points via the Bragg-Williams off-shell free energy.
Pavan Kumar Yerra, Chandrasekhar Bhamidipati, Sudipta Mukherji   +2 more
doaj   +1 more source

Topology optimization method for unsteady state incompressible viscous flow based on a level set immersed boundary method

Nihon Kikai Gakkai ronbunshu, 2019
This paper proposes a novel topology optimization method for unsteady state incompressible Navier-Stokes flow. Many methods of topology optimization for steady state flow have been proposed, whereas most fluid flow problems should be considered as ...
Atsushi KOGUCHI, Kentaro YAJI, Takayuki YAMADA, Kazuhiro IZUI, Shinji NISHIWAKI   +4 more
doaj   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

Advanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

Observation of momentum-gap topology of light at temporal interfaces in a time-synthetic lattice

Nature Communications
Topological phases have prevailed across diverse disciplines, spanning electronics, photonics, and acoustics. Hitherto, the understanding of these phases has centred on energy (frequency) bandstructures, showcasing topological boundary states at spatial ...
Yudong Ren, Kangpeng Ye, Qiaolu Chen, Fujia Chen, Li Zhang, Yuang Pan, Wenhao Li, Xinrui Li, Lu Zhang, Hongsheng Chen, Yihao Yang   +10 more
doaj   +1 more source

On the effect of boundary condition uncertainty on robust topology optimization of aerospace structures

, 2021
Aditya Vishwanathan, Gareth A. Vio, Timoleon Kipouros, Geoffrey T. Parks   +3 more
openalex   +2 more sources

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Topological phase transitions of generalized Brillouin zone

Communications Physics
It has been known that the bulk-boundary correspondence (BBC) of the non-Hermitian skin effect is characterized by the topology of the complex eigenvalue spectra, while the topology of the wave function gives rise to Hermitian BBC with conventional ...
Sonu Verma, Moon Jip Park
doaj   +1 more source

Topological divisors of zero and Shilov boundary

Topology and its Applications, 2006
Let \(L\) be a non-archimedean and non-trivially complete valued field, let \((A, \|. \| )\) be a commutative normed \(L\)-algebra with unity, and let \(\|.\| _{si}\) be the spectral seminorm of \(A\) defined by \(\| x \| _{si}:= \lim_{n} \| x^n \| ^{1/n}\). The Shilov boundary of \(A\) is the smallest among all the subsets \(F\) of Mult\((A,\|.
openaire   +2 more sources

Topological gravity on surfaces with boundaries

Physics Letters B, 1990
Abstract In this letter we investigate the effects of boundaries in topological gravity. This is done by the insertion of appropriate vertex operators. We indicate how the correlation functions are determined and discuss the example of the disk.
James Hughes, David Montano
openaire   +1 more source