Results 81 to 90 of about 37,131 (309)

On emergent conformal symmetry near the photon ring

open access: yesJournal of High Energy Physics, 2023
In this note we revisit the emergent conformal symmetry in the near-ring region of warped spacetime. In particular, we propose a novel construction of the emergent near-ring sl(2, ℝ)QNM symmetry.
Bin Chen, Yehui Hou, Zezhou Hu
doaj   +1 more source

Notes on a surface defect in the O(N) model

open access: yesJournal of High Energy Physics, 2023
We study a surface defect in the free and critical O(N) vector models, defined by adding a quadratic perturbation localized on a two-dimensional subspace of the d-dimensional CFT.
Simone Giombi, Bowei Liu
doaj   +1 more source

The epsilon expansion of the O(N) model with line defect from conformal field theory

open access: yesJournal of High Energy Physics, 2023
We employ the axiomatic framework of Rychkov and Tan to investigate the critical O(N) vector model with a line defect in (4 − ϵ) dimensions. We assume the fixed point is described by defect conformal field theory and show that the critical value of the ...
Tatsuma Nishioka   +2 more
doaj   +1 more source

Conformal invariance in two-dimensional turbulence

open access: yes, 2006
Simplicity of fundamental physical laws manifests itself in fundamental symmetries. While systems with an infinity of strongly interacting degrees of freedom (in particle physics and critical phenomena) are hard to describe, they often demonstrate ...
A Weinrib   +36 more
core   +4 more sources

Wave functions of symmetry-protected topological phases from conformal field theories [PDF]

open access: yes, 2015
We propose a method for analyzing two-dimensional symmetry-protected topological (SPT) wave functions using a correspondence with conformal field theories (CFTs) and integrable lattice models.
Thomas Scaffidi, Z. Ringel
semanticscholar   +1 more source

Anomalous Ward identities for on-shell amplitudes at the conformal fixed point

open access: yesJournal of High Energy Physics, 2023
Conformal symmetry underlies many massless quantum field theories, but little is known about the consequences of this powerful symmetry for on-shell scattering amplitudes.
Dmitry Chicherin   +2 more
doaj   +1 more source

Novel Surface‐Based Bézier Metamaterials: A Higher Degree of Parametrization toward Tailoring the Effective Properties under Compression

open access: yesAdvanced Engineering Materials, EarlyView.
Cubic Bézier curves are used in the synthesis of novel surface‐based metamaterials with tunable mechanical properties. Surface‐based geometries are 3D printed and tested in compression. The resulting mechanical properties are correlated to changes in the shape of the base curve, with high potential in energy absorption through the adjustment of their ...
Alberto Álvarez‐Trejo   +2 more
wiley   +1 more source

Unitary Fermi gas, epsilon expansion, and nonrelativistic conformal field theories

open access: yes, 2010
We review theoretical aspects of unitary Fermi gas (UFG), which has been realized in ultracold atom experiments. We first introduce the epsilon expansion technique based on a systematic expansion in terms of the dimensionality of space.
A.J. Leggett   +20 more
core   +1 more source

Asymptotic symmetries and geometry on the boundary in the first order formalism [PDF]

open access: yes, 2017
A bstractProper understanding of the geometry on the boundary of a spacetime is a critical step on the way to extending holography to spaces with non-AdS asymptotics. In general the boundary cannot be described in terms of the Riemannian geometry and the
Y. Korovin
semanticscholar   +1 more source

Large Area, Cost‐Effective, and Ultra‐Fast Fabrication of Mini‐Coils Toward Noninvasive Magnetic Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A simple, cleanroom‐free method produces flexible mini‐coils using automated blade cutting. The process is fast, low‐cost, and supports diverse materials. The coils show strong durability and performance under repeated bending. Demonstrated use in resistor‐inductor filters and magnetic nanoparticle control proves their adaptability.
Changhao Ge   +5 more
wiley   +1 more source

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