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The isotropic harmonic oscillator and the Kepler-Coulomb system are pivotal models in the Sciences. They are two examples of second-order (maximally) superintegrable (Hamiltonian) systems. These systems are classified in dimension two. A…

Differential Geometry · Mathematics 2026-01-21 Jeremy Nugent , Andreas Vollmer

We present a high-accuracy procedure for electronic structure calculations of strongly correlated materials. To address limitations in current electronic structure methods, we employ density functional theory in combination with the…

A system of two static quarks, at fixed distances r, and two light quarks is studied on an anisotropic lattice. Excitations by operators emphasizing quark or gluon degrees of freedom are examined. The maximum entropy method is applied in…

High Energy Physics - Lattice · Physics 2007-05-23 LHPC , H. Rudolf Fiebig

We consider a generalized Heitler model for QED cascade. An exact formula for the final number of leptons is obtained by solving the kinetic equations. We demonstrate that in such a model the final number of leptons does not depend on…

High Energy Physics - Phenomenology · Physics 2024-08-14 Y. V. Selivanov , A. M. Fedotov

A strong-coupling expansion for models of correlated electrons in any dimension is presented. The method is applied to the Hubbard model in $d$ dimensions and compared with numerical results in $d=1$. Third order expansion of the Green…

Strongly Correlated Electrons · Physics 2009-10-30 Stéphane Pairault , David Sénéchal , A. -M. S. Tremblay

Asynchronously communicating pushdown systems (ACPS) that satisfy the empty-stack constraint (a pushdown process may receive only when its stack is empty) are a popular decidable model for recursive programs with asynchronous atomic…

Logic in Computer Science · Computer Science 2015-01-20 Jonathan Kochems , C. -H. Luke Ong

The present article is an endeavor to look into some fruitful frameworks based on "Bi-maximal" neutrino mixing, from a model independent stand. The possibilities involving the correction or attenuation of the original BM mixing matrix,…

High Energy Physics - Phenomenology · Physics 2016-03-28 Subhankar Roy , N. Nimai Singh

We show that multiple filamentation patterns in high-power laser beams, can be described by means of two statistical physics concepts, namely self-similarity of the patterns over two nested scales, and nearest-neighbor interactions of…

Statistical Mechanics · Physics 2015-05-27 Wahb Ettoumi , Jérôme Kasparian , Jean-Pierre Wolf

Spin-1 resonances are among the states predicted by composite Higgs models and one expects them the have masses in the range of a few TeV. We focus here on models based on an underlying gauge-fermion description which predict QCD-coloured…

High Energy Physics - Phenomenology · Physics 2025-03-25 W. Porod

A feasibility study is presented to precisely measure the masses of charged sleptons and the lightest neutralino in $e^+e^-\to\smur\smur$ and $e^+e^-\to\stau_1\stau_1$ production. Different mSUGRA scenarios with small slepton-neutralino…

High Energy Physics - Phenomenology · Physics 2007-05-23 Hans-Ulrich Martyn

This paper presents a novel approach for directly generating full events at detector-level from parton-level information, leveraging cutting-edge machine learning techniques. To address the challenge of multiplicity variations between…

High Energy Physics - Phenomenology · Physics 2024-11-01 Guillaume Quétant , John Andrew Raine , Matthew Leigh , Debajyoti Sengupta , Tobias Golling

First-principles methods for time-resolved angular resolved photoelectron spectroscopy play a pivotal role in providing interpretation and microscopic understanding of the complex experimental data and in exploring novel observables or…

Materials Science · Physics 2021-12-28 Umberto De Giovannini , Shunsuke A. Sato , Hannes Hübener , Angel Rubio

We explore the space of consistent three-particle couplings in $\mathbb Z_2$-symmetric two-dimensional QFTs using two first-principles approaches. Our first approach relies solely on unitarity, analyticity and crossing symmetry of the…

High Energy Physics - Theory · Physics 2020-01-08 Alexandre Homrich , Joao Penedones , Jonathan Toledo , Balt C. van Rees , Pedro Vieira

We present a description of the operation of a multi-pixel detector in the presence of non-negligible dark-count and cross-talk effects. We apply the model to devise self-consistent calibration strategies to be performed on the very light…

Modern clustering approaches often trade interpretability for performance, particularly in deep learning-based methods. We present Generative Kernel Spectral Clustering (GenKSC), a novel model combining kernel spectral clustering with…

Machine Learning · Computer Science 2025-04-25 David Winant , Sonny Achten , Johan A. K. Suykens

We argue that in models with several high scales; e.g. in composite Higgs models or in gauge extensions of the Standard Model (SM), vector-like leptons can be likely produced in a relatively large $\sqrt{s}$ region of the phase space.…

High Energy Physics - Phenomenology · Physics 2020-09-10 Mikael Chala , Paweł Kozów , Maria Ramos , Arsenii Titov

We do meson spectroscopy by studying the behavior of S-matrix poles in the complex-energy plane, as a function of the coupling strength for triplet-P-zero quark-pair creation. Thereto, a general formula for non-exotic hadron-hadron…

High Energy Physics - Phenomenology · Physics 2009-11-11 Eef van Beveren , Frieder Kleefeld , George Rupp

We review the relation between 4n-dimensional quaternion-Kahler metrics with n+1 abelian isometries and superconformal theories of n+1 tensor supermultiplets. As an application we construct the class of eight-dimensional quaternion-Kahler…

High Energy Physics - Theory · Physics 2008-11-26 Bernard de Wit , Frank Saueressig

Many scintillator based detectors employ a set of photomultiplier tubes (PMT) to observe the scintillation light from potential signal and background events. It is important to be able to count the number of photoelectrons (PE) in the…

Instrumentation and Detectors · Physics 2019-10-30 Kolahal Bhattacharya , Christopher Jackson

Among several approaches to tackle the problem of energy consumption in modern computing systems, two solutions are currently investigated: one consists of artificial neural networks (ANNs) based on photonic technologies, the other is a…

Disordered Systems and Neural Networks · Physics 2022-11-03 B. Paroli , G. Martini , M. A. C. Potenza , M. Siano , M. Mirigliano , P. Milani