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We consider boundedness of a certain positive dyadic operator $$ T^\sigma \colon L^p(\sigma; \ \! \ell^2) \to L^p(\omega), $$ that arose during our attempts to develop a two-weight theory for the Hilbert transform in $L^p$. Boundedness of…

Classical Analysis and ODEs · Mathematics 2018-11-02 Tuomas Hytönen , Emil Vuorinen

In this paper we investigate weighted norm inequalities for the commutator of a fractional integral operator and multiplication by a function. In particular, we show that, for $\mu,\lambda\in A_{p,q}$ and $\alpha/n+1/q=1/p$, the norm $\|…

Classical Analysis and ODEs · Mathematics 2016-09-29 Irina Holmes , Robert Rahm , Scott Spencer

Let $0\leq \alpha<n$, $m\in \mathbb{N}$ and let consider $T_{\alpha,m}$ be a of integral operator, given by kernel of the form $$K(x,y)=k_1(x-A_1y)k_2(x-A_2y)\dots k_m(x-A_my),$$ where $A_i$ are invertible matrices and each $k_i$ satisfies…

Classical Analysis and ODEs · Mathematics 2020-07-06 Gonzalo H. Ibañez-Firnkorn , María Silvina Riveros , Raúl E. Vidal

We investigate thermal and nonthermal quantum correlations in the one dimensional spin 1 bilinear-biquadratic Heisenberg model. Using tools from quantum information theory such as generalized concurrence, negativity, and various measures of…

Quantum Physics · Physics 2024-12-31 Ghader Najarbashi , Hassan Bahmani , Babak Tarighi

The Seebeck coefficient (S) of a serially coupled quantum dot (SCQD) junction system is theoretically studied via a two-level Anderson model. A change of sign in S with respect to temperature is found, which arises from the competition…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 David M. -T. Kuo , Yia-chung Chang

Bipartite charge fluctuations (BCF) have been introduced to provide an experimental indication of many-body entanglement. They have proved themselves to be a very efficient and useful tool to characterize quantum phase transitions in a…

Strongly Correlated Electrons · Physics 2017-10-04 Loic Herviou , Christophe Mora , Karyn Le Hur

We develop the compactness theory of multilinear singular integrals on product spaces using a modern point of view. The first main result is a compact $T1$ theorem for multilinear Calder\'{o}n--Zygmund operators on product spaces. More…

Classical Analysis and ODEs · Mathematics 2025-03-20 Mingming Cao , Kôzô Yabuta

In this work we fully characterize the classes of matrix weights for which multilinear Calder\'on-Zygmund operators extend to bounded operators on matrix weighted Lebesgue spaces. To this end, we develop the theory of multilinear singular…

Functional Analysis · Mathematics 2024-12-20 Spyridon Kakaroumpas , Zoe Nieraeth

We study w*-semicrossed products over actions of the free semigroup and the free abelian semigroup on (possibly non-selfadjoint) w*-closed algebras. We show that they are reflexive when the dynamics are implemented by uniformly bounded…

Operator Algebras · Mathematics 2020-01-24 Robert T. Bickerton , Evgenios T. A. Kakariadis

Let $M=X\times Y$ be the product of two complex manifolds of positive dimensions. In this paper, we prove that there is no complete K\"ahler metric $g$ on $M$ such that: either (i) the holomorphic bisectional curvature of $g$ is bounded by…

Differential Geometry · Mathematics 2009-09-30 Luen-Fai Tam , Chengjie Yu

Let $(M^m,g)$ be a closed Riemannian manifold $(m\geq 2)$ of positive scalar curvature and $(N^n,h)$ any closed manifold. We study the asymptotic behaviour of the second Yamabe constant and the second $N-$Yamabe constant of $(M\times…

Differential Geometry · Mathematics 2016-12-02 Guillermo Henry

There exists increasing evidence that the phase diagram of the high-transition temperature (Tc) cuprate superconductors is controlled by a quantum critical point. One distinct theoretical proposal is that, with decreasing hole-carrier…

Superconductivity · Physics 2012-10-25 Yuan Li , G. Yu , M. K. Chan , V. Baledent , Yangmu Li , N. Barisic , X. Zhao , K. Hradil , R. A. Mole , Y. Sidis , P. Steffens , P. Bourges , M. Greven

We identify a novel next-to-leading order renormalization effect in the dimension-six SMEFT with direct phenomenological impact. The Higgs-Yukawa operator that modifies the top-Higgs coupling $\kappa_t$ induces a shift in the $ W $ mass at…

High Energy Physics - Phenomenology · Physics 2026-05-01 Lukas Born , Admir Greljo , Anders Eller Thomsen

A local Tb Theorem provides a flexible framework for proving the boundedness of a Calder\'on-Zygmund operator T. One needs only boundedness of the operator T on systems of locally pseudo-accretive functions \{b_Q\}, indexed by cubes. We…

Classical Analysis and ODEs · Mathematics 2015-09-02 Michael T. Lacey , Antti V. Vähäkangas

The most recent results from the B-factories on the time-dependent CP asymmetries measured in B0-decays mediated by b --> c c(bar) s quark-transitions are reviewed. The Standard Model interpretation of the results in terms of the parameter…

High Energy Physics - Experiment · Physics 2015-06-25 Heiko Lacker

The main result of this paper is a bi-parameter $Tb$ theorem for Littlewood-Paley $g$-function, where $b$ is a tensor product of two pseudo-accretive functions. Instead of the doubling measure, we work with a product measure $\mu = \mu_n…

Classical Analysis and ODEs · Mathematics 2016-04-26 Mingming Cao , Qingying Xue

Bayes factors are widely computed by Monte Carlo, yet heavy-tailed sampling distributions can make numerical validation unreliable. The Turing--Good identities provide exact moment equalities for powers of a Bayes factor (a density ratio).…

Methodology · Statistics 2026-02-24 Kensuke Okada

We consider a bipartite transformation that we call self-embezzlement and use it to prove a constant gap between the capabilities of two models of quantum information: the conventional model, where bipartite systems are represented by…

Quantum Physics · Physics 2022-07-13 Richard Cleve , Benoit Collins , Li Liu , Vern Paulsen

The coherent time evolution of electrons in double quantum dots induced by fast bias-voltage switches is studied theoretically. As it was shown experimentally, such driven double quantum dots are potential devices for controlled…

Mesoscale and Nanoscale Physics · Physics 2011-04-14 Alexander Croy , Ulf Saalmann

We show that while individual Riesz transforms are two weight norm stable under biLipschitz change of variables on $A_{\infty}$ weights, they are two weight norm unstable under even rotational change of variables on doubling weights. More…

Classical Analysis and ODEs · Mathematics 2024-06-13 Michel Alexis , José Luis Luna Garcia , Eric Sawyer , Ignacio Uriarte-Tuero