Results 11 to 20 of about 96,261 (253)
Fermi edge singularity and finite-frequency spectral features in a semi-infinite one-dimensional wire [PDF]
Physical Review B, 2012 We theoretically study a charge qubit interacting with electrons in a semi-infinite 1D wire. The system displays the physics of the Fermi edge singularity. Our results generalize known results for the Fermi-edge system to the regime where excitations induced by the qubit can resolve the spatial structure of the scattering region.
Sheikhan A, Snyman I
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Mathematica Bohemica, 2020 The order of growth of solutions to linear differential equations in complex plane have been investigated since 1980's and many results have been obtained by defining the order as \(\rho(f)=\limsup\limits_{r\to\infty}\frac{\log T(r,f)}{\log r}\). In this paper, by defining the order as \(\sigma_{T, z_{0}}=\limsup\limits_{r\to 0}\frac{\log^{+}T_{z_{0 ...
Samir Cherief, Saada Hamouda
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Geometric configurations of singularities for quadratic differential systems with three distinct real simple finite singularities [PDF]
, 2013 Agraïments: The third author is supported by NSERC. The fourth author is also supported by the grant 12.839.08.05F from SCSTD of ASM and partially by NSERC.In this work we classify, with respect to the geometric equivalence relation, the global ...
Artés, Joan Carles +3 more
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Finite and infinite energy solutions of singular elliptic problems: Existence and uniqueness
Journal of Differential Equations, 2018 We establish existence and uniqueness of solution for the homogeneous Dirichlet problem associated to a fairly general class of elliptic equations modeled by $$ - u= h(u){f} \ \ \text{in}\,\ , $$ where $f$ is an irregular datum, possibly a measure, and $h$ is a continuous function that may blow up at zero.
OLIVA, FRANCESCANTONIO +1 more
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Orientifolds and duality cascades: confinement before the wall
Journal of High Energy Physics, 2018 We consider D-branes at orientifold singularities and discuss two properties of the corresponding low energy four-dimensional effective theories which are not shared, generically, by other Calabi-Yau singularities.
Riccardo Argurio, Matteo Bertolini
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Generalized scaling theory for critical phenomena including essential singularity and infinite dimensionality [PDF]
, 2012 We propose a generic scaling theory for critical phenomena that includes power-law and essential singularities in finite and infinite dimensional systems. In addition, we clarify its validity by analyzing the Potts model in a simple hierarchical network,
Koji Nemoto +4 more
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Dynamical Cobordism and Swampland Distance Conjectures
Journal of High Energy Physics, 2021 We consider spacetime-dependent solutions to string theory models with tadpoles for dynamical fields, arising from non-trivial scalar potentials. The solutions have necessarily finite extent in spacetime, and are capped off by boundaries at a finite ...
Ginevra Buratti +3 more
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On turning waves for the inhomogeneous Muskat problem: a computer-assisted proof [PDF]
, 2014 We exhibit a family of graphs that develop turning singularities (i.e. their Lipschitz seminorm blows up and they cease to be a graph, passing from the stable to the unstable regime) for the inhomogeneous, two-phase Muskat problem where the permeability ...
Granero-Belinchón, Rafael +1 more
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Singularities of eight- and nine-particle amplitudes from cluster algebras and tropical geometry
Journal of High Energy Physics, 2021 We further exploit the relation between tropical Grassmannians and Gr(4, n) cluster algebras in order to make and refine predictions for the singularities of scattering amplitudes in planar N $$ \mathcal{N} $$ = 4 super Yang-Mills theory at higher ...
Niklas Henke, Georgios Papathanasiou
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Exact solutions of the Einstein equations for an infinite slab with a constant energy density
Physics Letters B, 2019 We find exact static solutions of the Einstein equations in the spacetime with plane symmetry, where an infinite slab with finite thickness and homogeneous energy (mass) density is present.
Alexander Yu. Kamenshchik +1 more
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