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Large $N$ matrix quantum mechanics is central to holographic duality but not solvable in the most interesting cases. We show that the spectrum and simple expectation values in these theories can be obtained numerically via a `bootstrap'…

High Energy Physics - Theory · Physics 2020-07-29 Xizhi Han , Sean A. Hartnoll , Jorrit Kruthoff

We generalize the theory of underlying one-step methods to strictly stable general linear methods (GLMs) solving nonautonomous ordinary differential equations (ODEs) that satisfy a global Lipschitz condition. We combine this theory with the…

Numerical Analysis · Mathematics 2017-09-08 Andrew J. Steyer , Erik S. Van Vleck

We show that the width of the wave-packet of a class of generalized nonlinear Schrodinger equations (NLSE) trapped in an arbitrary time-dependent harmonic well in any dimensions is universally determined by the same Hill's equation. This…

Condensed Matter · Physics 2009-11-07 Pijush K. Ghosh

This article deals with a quantum-mechanical system which generalizes the ordinary isotropic harmonic oscillator system. We give the coefficients connecting the polar and Cartesian bases for D=2 and the coefficients connecting the Cartesian…

Quantum Physics · Physics 2011-04-15 Y. M. Hakobyan , M. Kibler , G. S. Pogosyan , A. N. Sissakian

We show that a recently introduced generalized scheme of quantum mechanics has connections to Li\'{e}nard and Levinson-Smith classes of nonlinear systems. For the Li\'{e}nard type, which has coefficients of odd and odd symmetry, we…

Quantum Physics · Physics 2026-03-31 Bijan Bagchi , Anindya Ghose-Choudhury

The concept of a generalized nonanalytic expansion which involves nonanalytic combinations of exponentials, logarithms and powers of a coupling is introduced and its use illustrated in various areas of physics. Dispersion relations for the…

Mathematical Physics · Physics 2013-09-10 Ulrich D. Jentschura , Andrey Surzhykov , Jean Zinn-Justin

We introduce a natural generalization of the scattering equations, which connect the space of Mandelstam invariants to that of points on ${\mathbb{CP}^1}$, to higher-dimensional projective spaces $\mathbb{CP}^{k-1}$. The standard, $k=2$…

High Energy Physics - Theory · Physics 2019-06-26 Freddy Cachazo , Nick Early , Alfredo Guevara , Sebastian Mizera

We study the influence of the nonlinearity in the Schrodinger equation on the motion of quantum particles in a harmonic trap. In order to obtain exact analytic solutions, we have chosen the logarithmic nonlinearity. The unexpected result of…

Quantum Physics · Physics 2007-05-23 Iwo Bialynicki-Birula , Tomasz Sowinski

We revisit from a modern bootstrap perspective the longstanding problem of solving QCD in the large $N$ limit. We derive universal bounds on the effective field theory of massless pions by imposing the full set of positivity constraints…

High Energy Physics - Theory · Physics 2022-09-07 Jan Albert , Leonardo Rastelli

We extend the soft theorems for scattering amplitudes of scalar effective field theories to one-loop order. Our analysis requires carefully accounting for the fact that the soft limit is not guaranteed to commute with evaluating…

High Energy Physics - Theory · Physics 2025-04-18 Timothy Cohen , Ipak Fadakar , Andreas Helset , Filippo Nardi

A simple scheme to express the Mellin transform of $D$-dimensional Euclidean conformal bootstrap equation is presented by relating conformal blocks to a Gauss-Grassmann (GG) system due to Gelfand-Graev, associated to conformal integrals,…

High Energy Physics - Theory · Physics 2026-01-29 Koushik Ray

In this paper we deal with an equation in nonlinear combination of iterates. Although it can be reduced by the logarithm conjugacy to a form for application of Schauder's or Banach's fixed point theorems, a difficulty called Zero Problem is…

Dynamical Systems · Mathematics 2024-01-15 Chaitanya Gopalakrishna , Weinian Zhang

A semi-classical check of the Goddard-Nuyts-Olive (GNO) generalized duality conjecture for gauge theories with adjoint Higgs fields is performed for the case where the unbroken gauge group is non-abelian. The monopole solutions of the…

High Energy Physics - Theory · Physics 2008-02-03 N. Dorey , C. Fraser , T. J. Hollowood , M. A. C. Kneipp

We initiate an exploration of the conformal bootstrap for $n>4$ point correlation functions. Here we bootstrap correlation functions of the lightest scalar gauge invariant operators in planar non-abelian conformal gauge theories as their…

High Energy Physics - Theory · Physics 2021-03-31 Carlos Bercini , Vasco Gonçalves , Pedro Vieira

We comment on the status of "Steinmann-like" constraints, i.e. all-loop constraints on consecutive entries of the symbol of scattering amplitudes and Feynman integrals in planar ${\cal N}=4$ super-Yang-Mills, which have been crucial for the…

High Energy Physics - Theory · Physics 2022-02-02 Song He , Zhenjie Li , Qinglin Yang

We prove nonlinear modulational instability for both periodic and localized perturbations of periodic traveling waves for several dispersive PDEs, including the KDV type equations (e.g. the Whitham equation, the generalized KDV equation,…

Analysis of PDEs · Mathematics 2018-09-26 Jiayin Jin , Shasha Liao , Zhiwu Lin

Recently it was established that the one-loop planar dilatation generator of N=4 Super Yang-Mills theory may be identified, in some restricted cases, with the Hamiltonians of various integrable quantum spin chains. In particular Minahan and…

High Energy Physics - Theory · Physics 2008-11-26 Niklas Beisert , Matthias Staudacher

The global existence of classical solutions to strongly coupled parabolic systems is shown to be equivalent to the availability of an iterative scheme producing a sequence of solutions with uniform continuity in the BMO norms. Amann's…

Analysis of PDEs · Mathematics 2014-09-17 Dung Le

This article establishes novel strong uniform laws of large numbers for randomly weighted sums such as bootstrap means. By leveraging recent advances, these results extend previous work in their general applicability to a wide range of…

Probability · Mathematics 2023-10-24 Neil A. Spencer , Jeffrey W. Miller

We use the general notion of set of indices to construct algebras of nonlinear generalized functions of Colombeau type. They are formally defined in the same way as the special Colombeau algebra, but based on more general growth condition…

Functional Analysis · Mathematics 2014-08-08 Paolo Giordano , Lorenzo Luperi Baglini