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Following Symanzik we argue that the Schr\"odinger functional in lattice gauge theories without matter fields has a well-defined continuum limit. Due to gauge invariance no extra counter terms are required. The Schr\"odinger functional is,…

High Energy Physics - Lattice · Physics 2016-08-14 Martin Lüscher , Rajamani Narayanan , Peter Weisz , Ulli Wolff

We introduce the concept of shape partition of a tensor and formulate a general tensor eigenvalue problem that includes all previously studied eigenvalue problems as special cases. We formulate irreducibility and symmetry properties of a…

Spectral Theory · Mathematics 2021-02-25 Antoine Gautier , Francesco Tudisco , Matthias Hein

We prove a theorem which implies a quantum (multiplicative) analogue of the Horn conjecture, and also of the saturation conjecture. We obtain transversality statements for quantum schubert calculus in any characteristic and also determine…

Algebraic Geometry · Mathematics 2007-05-23 Prakash Belkale

An analogue of Kolmogorov's superconvergent perturbation theory in classical mechanics is constructed for self adjoint operators. It is different from the usual Rayleigh--Schr\"odinger perturbation theory and yields expansions for…

Quantum Physics · Physics 2009-01-23 Wolfgang Scherer

A version of Jonsson's theorem, as previously generalized, holds in non-modular varieties.

Rings and Algebras · Mathematics 2007-05-23 William H. Rowan

We generalize Minami's estimate for the Anderson model and its extensions to $n$ eigenvalues, allowing for $n$ arbitrary intervals and arbitrary single-site probability measures with no atoms. As an application, we derive new results about…

Mathematical Physics · Physics 2009-11-13 Jean-Michel Combes , François Germinet , Abel Klein

Following the proof given by Froese and Herbst in [FH82] with another conjugate operator, we show for a class of real potential that possible eigenfunction of the Schr\"odinger operator has to decay sub-exponentially. We also show that, for…

Spectral Theory · Mathematics 2018-10-09 Alexandre Martin

We give a version of the Montel theorem for Hardy spaces of holomorphic functions on an infinite dimensional space. As a by-product, we provide a Montel-type theorem for the Hardy space of Dirichlet series. This approach also gives an…

Functional Analysis · Mathematics 2020-04-23 Tomás Fernández Vidal , Daniel Galicer , Pablo Sevilla-Peris

Conventional one-dimensional oscillation theorem is found to be violated for multi-component Schr\"{o}dinger equations in a general case while for two-component eigenstates coupled by the sign-constant potential operator the following…

Atomic Physics · Physics 2010-03-11 V. I. Pupyshev , E. A. Pazyuk , A. V. Stolyarov , M. Tamanis , R. Ferber

This paper addresses the problem of computing the eigenvalues lying in the gaps of the essential spectrum of a periodic Schrodinger operator perturbed by a fast decreasing potential. We use a recently developed technique, the so called…

Spectral Theory · Mathematics 2009-11-13 Lyonell Boulton , Michael Levitin

We introduce the notion of order-preserving multi-homogeneous mapping which allows to study Perron-Frobenius type theorems and nonnegative tensors in unified fashion. We prove a weak and strong Perron-Frobenius theorem for these maps and…

Spectral Theory · Mathematics 2017-02-13 Antoine Gautier , Francesco Tudisco , Matthias Hein

In the recent paper, Ref. 1, the l-waves Schr\"odinger equation for the Cornell's potential is solved in quantum mechanics with a generalized uncertainty principle by following Ref. 2. It is showed here that the approach of Ref. 2 can only…

Quantum Physics · Physics 2017-11-15 Djamil Bouaziz

Using well-known methods we generalize (hyper)virial theorems to case of singular potential. Discussion is carried on for most general second order differential equation, which involves all physically interesting cases, such as…

Mathematical Physics · Physics 2013-07-31 Teimuraz Nadareishvili , Anzor Khelashvili

We prove a new smoothing type property for solutions of the 1d quintic Schr\"odinger equation. As a consequence, we prove that a family of natural gaussian measures are quasi-invariant under the flow of this equation. In the defocusing…

Analysis of PDEs · Mathematics 2021-08-23 F. Planchon , N. Tzvetkov , N. Visciglia

Gleason-type theorems for quantum theory allow one to recover the quantum state space by assuming that (i) states consistently assign probabilities to measurement outcomes and that (ii) there is a unique state for every such assignment. We…

Quantum Physics · Physics 2021-12-01 Victoria J Wright , Stefan Weigert

We derive inequalities for sums of eigenvalues of Schr\"{o}dinger operators on finite intervals and tori. In the first of these cases, the inequalities converge to the classical trace formulae in the limit as the number of eigenvalues…

Spectral Theory · Mathematics 2016-05-09 Pedro Freitas , James B. Kennedy

We study the properties of reflectionless measures for an $s$-dimensional Calder\'on-Zygmund operator $T$ acting in $\mathbb{R}^d$, where $s\in (0,d)$. Roughly speaking, these are the measures $\mu$ for which $T(\mu)$ is constant on the…

Analysis of PDEs · Mathematics 2014-10-01 Benjamin Jaye , Fedor Nazarov

Two types of eigenvalue continuity are commonly used in the literature. However, their meanings and the conditions under which continuities are used are not always stated clearly. This can lead to some confusion and needs to be addressed.…

Spectral Theory · Mathematics 2019-12-12 Chi-Kwong Li , Fuzhen Zhang

We consider Darboux transformations for the derivative nonlinear Schr\"odinger equation. A new theorem for Darboux transformations of operators with no derivative term are presented and proved. The solution is expressed in quasideterminant…

Exactly Solvable and Integrable Systems · Physics 2014-07-04 Jonathan J. C. Nimmo , Halis Yilmaz

In this paper, a Lagrangian perturbation theory for the second order treatment of small disturbances of the event horizon in Schwarzchild black holes is introduced. The issue of gauge invariance in the context of general relativistic theory…

General Relativity and Quantum Cosmology · Physics 2015-06-03 Nahid Ahmadi