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Approximation of a general singular vertex coupling in quantum graphs
The longstanding open problem of approximating all singular vertex couplings in a quantum graph is solved. We present a construction in which the edges are decoupled, the limit can yield any prescribed Singular
BE - Teoretická fyzika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Approximations of Singular Vertex Couplings in Quantum Graphs
We discuss approximations of the vertex coupling on a star-shaped quantum graph of n edges in the singular case when the wave functions are not continuous at the vertex and no edge-permutation symmetry is present. ...
BE - Teoretická fyzika
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Quantification of the influence of vertex singularities on fatigue crack behavior
The effect of vertex singularity on fatigue crack behavior is presented in the article. The methodology based on generalized stress intensity factor and model of V close to the free surface, where the effect of the vertex <...
JL - Únava materiálu a lomová mechanika
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
The influence of vertex singularities on fatigue crack shape
Due to the existence of vertex singularity at the point where the crack to the free surface the vertex singularity is significant. The influence of vertex singularity on crack behaviour and crack ...
JL - Únava materiálu a lomová mechanika
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Fatigue crack shape prediction based on vertex singularity
Due to the existence of vertex singularity at the point where the crack to this, at the free surface or in the boundary layer close to free surface the vertex singularity is significant. The influence of vertex...
JL - Únava materiálu a lomová mechanika
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
The influence of vertex singularities on fatigue crack shape
Due to the existence of vertex singularity at the point where the crack to the free surface the vertex singularity is significant. The influence of vertex singularity on crack behaviour and crack ...
JL - Únava materiálu a lomová mechanika
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Spectral Filtering in Quantum Y-Junction
We examine scattering properties of singular vertex of degree n = 2 and 3, taking advantage of a new form of representing the vertex boundary condition, which has been devised to approximate a singular vertex
BE - Teoretická fyzika
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
A diagrammatic solution of the single-impurity Anderson model in the Kondo regime
A simplified parquet approximation is developed to the two-particle vertex of strongly correlated electrons so that electron-hole and -electron-electron irreducible vertices are determined self-consistently. We showed that the dominant contr...
BE - Teoretická fyzika
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
High-energy asymptotics of the spectrum of a rectangular periodic network
The aim of this paper is to study asymptotical behaviour of an infinite two-dimensional periodic rectangular network. A general singular coupling in the vertices is supposed. We will show that for certain vertex couplin...
BA - Obecná matematika
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Fatigue crack shape prediction based on the stress singularity exponent
. Due to the existence of vertex singularity in the point where the crack front the influence of the vertex singularity on crack shape for threedimensional structure. The iterative process for estimation of a real ...
JL - Únava materiálu a lomová mechanika
- 2012 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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