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We continue our study of the defect CFT on a Maldacena-Wilson line in N=4 Super-Yang-Mills theory using Bootstrability -- the conformal bootstrap supplemented with exact integrability data. In this paper, we extend this program to charged…

高能物理 - 理论 · 物理学 2024-12-19 Andrea Cavaglià , Nikolay Gromov , Julius Julius , Michelangelo Preti , Nika Sergeevna Sokolova

Transformers with linear attention offer significant computational advantages over softmax-based transformers but often suffer from degraded performance. The symmetric power (sympow) transformer, a particular type of linear transformer,…

机器学习 · 计算机科学 2025-05-06 Saurabh Kumar , Jacob Buckman , Carles Gelada , Sean Zhang

We develop new methods for approximating conformal blocks as positive functions times polynomials, with applications to the numerical bootstrap. We argue that to obtain accurate bootstrap bounds, conformal block approximations should…

高能物理 - 理论 · 物理学 2026-05-27 Cyuan-Han Chang , Vasiliy Dommes , Petr Kravchuk , David Poland , David Simmons-Duffin

It is shown how to obtain conformal blocks from embedding space with the help of the operator product expansion. The minimal conformal block originates from scalar exchange in a four-point correlation functions of four scalars. All…

高能物理 - 理论 · 物理学 2016-06-08 Jean-François Fortin , Witold Skiba

We apply recently constructed functional bases to the numerical conformal bootstrap for 1D CFTs. We argue and show that numerical results in this basis converge much faster than the traditional derivative basis. In particular, truncations…

高能物理 - 理论 · 物理学 2020-02-17 Miguel F. Paulos , Bernardo Zan

We describe in detail the method used in our previous work arXiv:1611.10344 to study the Wilson-Fisher critical points nearby generalized free CFTs, exploiting the analytic structure of conformal blocks as functions of the conformal…

高能物理 - 理论 · 物理学 2017-05-24 Ferdinando Gliozzi , Andrea L. Guerrieri , Anastasios C. Petkou , Congkao Wen

We present PyCDFT, a Python package to compute diabatic states using constrained density functional theory (CDFT). PyCDFT provides an object-oriented, customizable implementation of CDFT, and allows for both single-point…

材料科学 · 物理学 2020-07-07 He Ma , Wennie Wang , Siyoung Kim , Man-Hin Cheng , Marco Govoni , Giulia Galli

Conventional approaches to fault-tolerant quantum computing realize logical circuits gate-by-gate, synthesizing each gate independently on one or more code blocks. This incurs excess overhead and doesn't leverage common structures in…

量子物理 · 物理学 2026-02-02 Zhuangzhuang Chen , Jack Owen Weinberg , Narayanan Rengaswamy

The combination of integrability and crossing symmetry has proven to give tight non-perturbative bounds on some planar structure constants in $\mathcal{N}$=4 SYM, particularly in the setup of defect observables built on a Wilson-Maldacena…

高能物理 - 理论 · 物理学 2023-12-20 Andrea Cavaglià , Nikolay Gromov , Michelangelo Preti

We provide a framework for generic 4D conformal bootstrap computations. It is based on the unification of two independent approaches, the covariant (embedding) formalism and the non-covariant (conformal frame) formalism. We construct their…

高能物理 - 理论 · 物理学 2017-05-17 Gabriel Francisco Cuomo , Denis Karateev , Petr Kravchuk

We apply the numerical conformal bootstrap to correlators of Coulomb and Higgs branch operators in $4d$ $\mathcal{N}=2$ superconformal theories. We start by revisiting previous results on single correlators of Coulomb branch operators. In…

高能物理 - 理论 · 物理学 2021-02-24 Aleix Gimenez-Grau , Pedro Liendo

We present a Python extension to the massively parallel HPC simulation toolkit waLBerla. waLBerla is a framework for stencil based algorithms operating on block-structured grids, with the main application field being fluid simulations in…

分布式、并行与集群计算 · 计算机科学 2015-11-24 Martin Bauer , Florian Schornbaum , Christian Godenschwager , Matthias Markl , Daniela Anderl , Harald Köstler , Ulrich Rüde

Conformal blocks for correlation functions of tensor operators play an increasingly important role for the conformal bootstrap programme. We develop a universal approach to such spinning blocks through the harmonic analysis of certain…

高能物理 - 理论 · 物理学 2017-11-07 Volker Schomerus , Evgeny Sobko , Mikhail Isachenkov

The modern conformal bootstrap program often employs the method of linear functionals to derive the numerical or analytical bounds on the CFT data. These functionals must have a crucial "swapping" property, allowing to swap infinite…

高能物理 - 理论 · 物理学 2017-08-11 Jiaxin Qiao , Slava Rychkov

Using the numerical modular bootstrap, we constrain the space of 1+1d CFTs with a finite non-invertible global symmetry described by a fusion category $\mathcal{C}$. We derive universal and rigorous upper bounds on the lightest…

高能物理 - 理论 · 物理学 2023-07-12 Ying-Hsuan Lin , Shu-Heng Shao

Conformal blocks play a central role in CFTs as the basic, theory-independent building blocks. However, only limited results are available concerning multipoint blocks associated with the global conformal group. In this paper, we…

高能物理 - 理论 · 物理学 2020-06-24 Sarthak Parikh

We explore the idea to bootstrap Feynman integrals using integrability. In particular, we put the recently discovered Yangian symmetry of conformal Feynman integrals to work. As a prototypical example we demonstrate that the D-dimensional…

高能物理 - 理论 · 物理学 2021-01-20 Florian Loebbert , Dennis Müller , Hagen Münkler

Conformal blocks are the building blocks for correlation functions in conformal field theories. The four-point function is the most well-studied case. We consider conformal blocks for $n$-point correlation functions. For conformal field…

高能物理 - 理论 · 物理学 2019-03-27 Vladimir Rosenhaus

In this long overdue second installment, we continue to develop the conformal bootstrap program for ${\mathcal N}=4$ superconformal field theories in four dimensions via an analysis of the correlation function of four stress-tensor…

高能物理 - 理论 · 物理学 2019-07-24 Christopher Beem , Leonardo Rastelli , Balt C. van Rees

We introduce a non-perturbative framework for computing structure constants of single-trace operators in the N=4 SYM theory at large N. Our approach features new vertices, with hexagonal shape, that can be patched together into three- and…

高能物理 - 理论 · 物理学 2015-05-27 Benjamin Basso , Shota Komatsu , Pedro Vieira