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This work studies a two-component Fornberg-Whitham (FW) system, which can be considered as a model for the propagation of shallow water waves. It's known that its solutions depend continuously on their initial data from the local…

Analysis of PDEs · Mathematics 2021-07-06 Xu Fei , Zhang Yong , Fengquan Li

We investigate Weyl anomalies on a curved world sheet to second order in a weak field expansion. Using a local version of the exact renormalization group equations, we obtain nonperturbative results for the tachyon/graviton/dilaton system.…

High Energy Physics - Theory · Physics 2009-10-22 Jens Schnittger , Ulrich Ellwanger

Given a function $\psi$ in $ \LL^2(\R^d)$, the affine (wavelet) system generated by $\psi$, associated to an invertible matrix $a$ and a lattice $\zG$, is the collection of functions $\{|\det a|^{j/2} \psi(a^jx-\gamma): j \in \Z, \gamma \in…

Classical Analysis and ODEs · Mathematics 2007-05-23 Carlos Cabrelli , Ursula Molter

We perform a systematic one-loop renormalization to the standard model with a nonlinearly realized Higgs boson field and the electroweak chiral Lagrangian up to $O(p^2)$ order. We find even in the nonlinear form, the Higgs model of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Qi-Shu Yan

In the reduced phase space of electromagnetism, the generator of duality rotations in the usual Poisson bracket is shown to generate Maxwell's equations in a second, much simpler Poisson bracket. This gives rise to a hierarchy of…

High Energy Physics - Theory · Physics 2009-05-12 Glenn Barnich , Cedric Troessaert

In this article we construct affine systems that provide a simultaneous atomic decomposition for a wide class of functional spaces including the Lebesgue spaces $L^p(\Rdst)$, $1<p<+\infty$. The novelty and difficulty of this construction is…

Functional Analysis · Mathematics 2015-04-27 Carlos Cabrelli , Ursula Molter , José Luis Romero

When an integrable two-degrees-of-freedom Hamiltonian system possessing a circle of parabolic fixed points is perturbed, a parabolic resonance occurs. It is proved that its occurrence is generic for one parameter families (co-dimension one…

Dynamical Systems · Mathematics 2018-04-18 Vered Rom-Kedar

We study totally positive (TP) functions of finite type and exponential B-splines as window functions for Gabor frames. We establish the connection of the Zak transform of these two classes of functions and prove that the Zak transforms…

Information Theory · Computer Science 2014-11-07 Tobias Kloos , Joachim Stöckler

We consider a tight-binding model defined by a matrix Hamiltonian over 2D Brillouin zone. Multiband energy spectrum gives rise to a non-Abelian gauge structure set by the Berry connections. The corresponding curvature $F_{\mu\nu}$ vanishes…

Mesoscale and Nanoscale Physics · Physics 2022-09-29 T. Supatashvili , M. Eliashvili , G. Tsitsishvili

We extend the Dong-Mason theorem on the irreducibility of modules for orbifold vertex algebras from [C. Dong, G. Mason, Duke Math. J. 86 (1997)] 305-321] for the category of weak modules. Let $V$ be a vertex operator algebra, $g$ an…

Quantum Algebra · Mathematics 2022-01-14 Drazen Adamovic , Ching Hung Lam , Veronika Pedic Tomic , Nina Yu

We consider the fermion spectrum in the strong coupling vortex phase of a lattice fermion-scalar model with a global $U(1)_L\times U(1)_R$, in 2D, in the context of a recently proposed two-cutoff lattice formulation. The fermion doublers…

High Energy Physics - Lattice · Physics 2010-03-19 P. Hernandez , Ph. Boucaud

Let $G$ be a reductive linear algebraic group over an algebraically closed field $\mathbb{K}$ of characteristic $2$. Fix a parabolic subgroup $P$ such that the corresponding parabolic subgroup over $\mathbb{C}$ has abelian unipotent radical…

Algebraic Geometry · Mathematics 2021-07-23 Michele Carmassi

We show that multi-window Gabor frames with windows in the Wiener algebra $W(L^{\infty}, \ell^{1})$ are Banach frames for all Wiener amalgam spaces. As a byproduct of our results we positively answer an open question that was posed by…

Functional Analysis · Mathematics 2014-12-04 Radu Balan , Jens G. Christensen , Ilya A. Krishtal , Kasso A. Okoudjou , José Luis Romero

We consider biorthogonal polynomials that arise in the study of a generalization of two--matrix Hermitian models with two polynomial potentials V_1(x), V_2(y) of any degree, with arbitrary complex coefficients. Finite consecutive…

Exactly Solvable and Integrable Systems · Physics 2009-01-28 M. Bertola , B. Eynard , J. Harnad

The locally BPS Wilson loop and the pure gauge Wilson loop map under AdS/CFT duality to string world-sheet boundaries with standard and alternate quantizations of the world-sheet fields. This implies an RG flow between the two operators,…

High Energy Physics - Theory · Physics 2015-05-28 Joseph Polchinski , James Sully

We study the decay B -> K* l+ l- in the QCD factorization approach and propose a new integrated observable whose dependence on the form factors is almost negligible, consequently the non--perturbative error is significantly reduced and…

High Energy Physics - Phenomenology · Physics 2010-11-30 Enrico Lunghi , Amarjit Soni

Interacting many-particle systems with a mean-field one body part plus a chaos generating random two-body interaction having strength $\lambda$, exhibit Poisson to GOE and Breit-Wigner (BW) to Gaussian transitions in level fluctuations and…

Chaotic Dynamics · Physics 2009-11-11 V. K. B. Kota , N. D. Chavda , R. Sahu

We report on a bistable light transmission through a planar metamaterial composed of a metal pattern of weakly asymmetric elements placed on a nonlinear substrate. Such structure bears the Fano-like sharp resonance response of a…

Motivated by the calculation of observables in the decays $\Lambda_b \to \Lambda_c\left({1 \over 2}^\pm \right) \ell \overline{\nu}$, as tests of Lepton Flavor Universality, we present a calculation of form factors in the quark model. Our…

High Energy Physics - Phenomenology · Physics 2020-12-30 D. Bečirević , A. Le Yaouanc , V. Morénas , L. Oliver

We present results for the non-perturbative determination of the improvement and renormalization factors of the isovector axial current for lattice QCD with two flavors of dynamical Wilson quarks. The improvement and normalization…

High Energy Physics - Lattice · Physics 2007-05-23 Roland Hoffmann , Michele Della Morte , Francesco Knechtli , Rainer Sommer , Ulli Wolff