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In this work we investigate the L^p-L^q-mapping properties of the resolvent associated with the time-harmonic isotropic Maxwell operator. As spectral parameters close to the spectrum are also covered by our analysis, we obtain an…

偏微分方程分析 · 数学 2021-08-26 Lucrezia Cossetti , Rainer Mandel

We show that, for one-dimensional discrete Schr\"odinger operators, stability of Anderson localization under a class of rank one perturbations implies absence of intervals in spectra. The argument is based on well-known result of Gordon and…

谱理论 · 数学 2025-09-03 Ilya Kachkovskiy , Leonid Parnovski , Roman Shterenberg

We investigate bifurcation of closed orbits with a fixed energy level for a class of nearly integrable Hamiltonian systems with two degrees of freedom. More precisely, we make a joint use of Moser invariant curve theorem and…

动力系统 · 数学 2023-10-05 Alberto Boscaggin , Walter Dambrosio , Guglielmo Feltrin

Conventional weak-coupling Rayleigh-Schr\"odinger perturbation theory suffers from problems that arise from resonant coupling of successive orders in the perturbation series. Multiple-scale analysis, a powerful and sophisticated…

高能物理 - 理论 · 物理学 2009-10-30 Carl M. Bender , Luis M. A. Bettencourt

We formulate a new concept of asymptotic completeness for two-dimensional massless quantum field theories in the spirit of the theory of particle weights. We show that this concept is more general than the standard particle interpretation…

数学物理 · 物理学 2013-09-04 Wojciech Dybalski , Yoh Tanimoto

We prove certain two weight bump conditions are sufficient for the compactness of the commutator $[b,T]$ where $b\in CMO$ and $T$ is a Calder\'on- Zygmund operator. This is the first result for compactness in the two weight setting without…

经典分析与常微分方程 · 数学 2022-08-23 Adam Mair , Kabe Moen

The anharmonic electron-phonon problem is solved in the infinite-dimensional limit using quantum Monte Carlo simulation. Charge-density-wave order is seen to remain at half filling even though the anharmonicity removes the particle-hole…

凝聚态物理 · 物理学 2009-10-28 J. K. Freericks , Mark Jarrell , G. D. Mahan

In the present paper, we discuss applications of the derived completion theorems proven in our previous two papers. One of the main applications is to Riemann-Roch problems for forms of higher equivariant K-theory, which we are able to…

代数几何 · 数学 2024-05-17 Gunnar Carlsson , Roy Joshua , Pablo Pelaez

In this paper we give an asymptotically tight bound for the tolerated Tverberg Theorem when the dimension and the size of the partition are fixed. To achieve this we study certain partitions of order-type homogeneous sets and use a…

组合数学 · 数学 2016-06-09 Natalia García-Colín , Miguel Raggi , Edgardo Roldán-Pensado

We reanalyse the question whether the quantum Bogomolnyi bound is saturated in the two-dimensional supersymmetric kink and sine-Gordon models. Our starting point is the usual expression for the one-loop correction to the mass of a soliton…

高能物理 - 理论 · 物理学 2009-10-30 A. Rebhan , P. van Nieuwenhuizen

This is an update on the quasicentral modulus, an invariant for an n-tuple of Hilbert space operators and a rearrangement invariant norm, that plays a key-role in sharp multivariable generalizations of the classical Weyl-von Neumann-Kuroda…

泛函分析 · 数学 2025-04-01 Dan-Virgil Voiculescu

In this paper we consider affine Toda systems defined on the half-plane and study the issue of integrability, i.e. the construction of higher-spin conserved currents in the presence of a boundary perturbation. First at the classical level…

高能物理 - 理论 · 物理学 2016-09-06 S. Penati , D. Zanon

We extend our approach based on the second order perturbation theory in the Coulomb interaction recently developed for quantum dots coupled to superconducting leads to the superconducting double quantum dot setups. Using our perturbative…

介观与纳米尺度物理 · 物理学 2020-07-27 Vladislav Pokorný , Martin Žonda , Georgios Loukeris , Tomáš Novotný

In a case study on asymptotics of spectral quantities of Schr\"odinger operators we show how the Riesz-Thorin theorem on the interpolation of linear operators can be extended to nonlinear maps.

泛函分析 · 数学 2013-06-25 Thomas Kappeler , Peter Topalov

Fuglede-Putnam Theorem have been proved for a considerably large number of class of operators. In this paper by using the spectral theory, we obtain a theoretical and general framework from which Fuglede-Putnam theorem may be promptly…

泛函分析 · 数学 2016-03-25 Farida Lombarkia , Mohamed Amouch

In this paper we prove an abstract KAM theorem for infinite dimensional Hamiltonians systems. This result extends previous works of S.B. Kuksin and J. P\"oschel and uses recent techniques of H. Eliasson and S.B. Kuksin. As an application we…

偏微分方程分析 · 数学 2015-05-18 Benoît Grébert , Laurent Thomann

Two non-equidistant grid implementations of infinite range exterior complex scaling are introduced that allow for perfect absorption in the time dependent Schr\"odinger equation. Finite element discrete variables grid discretizations…

计算物理 · 物理学 2015-09-17 Markus Weinmüller , Michael Weinmüller , Jonathan Rohland , Armin Scrinzi

In this paper we give a new proof of the second order Boltzmann-Gibbs principle. The proof does not impose the knowledge on the spectral gap inequality for the underlying model and it relies on a proper decomposition of the antisymmetric…

概率论 · 数学 2017-08-30 Patricia Gonçalves , Milton Jara , Marielle Simon

We study modules over stacks of deformation quantization algebroids on complex Poisson manifolds. We prove finiteness and duality theorems in the relative case and construct the Hochschild class of coherent modules. We prove that this class…

代数几何 · 数学 2015-03-13 Masaki Kashiwara , Pierre Schapira

In the framework of geometric quantization we extend the Bohr-Sommerfeld rules to a full quantization theory which resembles Heisenberg's matrix theory. This extension is possible because Bohr-Sommerfeld rules not only provide an orthogonal…

辛几何 · 数学 2012-07-06 Richard Cushman , Jedrzej Sniatycki