Results 61 to 70 of about 235,883 (239)

Directional Flow of Confined Polaritons in CrSBr

open access: yesAdvanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak   +10 more
wiley   +1 more source

Note on holographic torus stress tensor correlators in AdS 3 gravity

open access: yesJournal of High Energy Physics
In the AdS3/CFT2 framework, the Euclidean BTZ black hole corresponds to the dominant high-temperature phase of its dual field theory. We initially employ perturbative methods to solve the Einstein equations as boundary value problems, providing ...
Song He, Yi Li, Yun-Ze Li, Yunda Zhang
doaj   +1 more source

Partonic angular momentum in the nucleon's chiral periphery

open access: yesPhysics Letters B, 2019
We study the nucleon's partonic angular momentum (AM) content at peripheral transverse distances b=O(Mπ−1), where the structure is governed by chiral dynamics.
C. Granados, C. Weiss
doaj   +1 more source

Unruh effect universality: emergent conical geometry from density operator

open access: yesJournal of High Energy Physics, 2020
The Unruh effect has been investigated from the point of view of the quantum statistical Zubarev density operator in space with the Minkowski metric.
Georgy Y. Prokhorov   +2 more
doaj   +1 more source

Electromagnetic momentum in a dielectric and the energy--momentum tensor

open access: yes, 2012
The Abraham--Minkowski momentum controversy is the outwardly visible symptom of an inconsistency in the use of the energy-momentum tensor in the case of a plane quasimonochromatic field in a simple linear dielectric.
Crenshaw, Michael E.
core   +1 more source

Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution

open access: yesAdvanced Materials, EarlyView.
Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini   +28 more
wiley   +1 more source

The gravitational energy-momentum pseudo-tensor of conformally invariant theories of gravity

open access: yesJournal of High Energy Physics
We construct the gravitational energy-momentum pseudo-tensor of up to fourth-order conformally invariant theories of gravity. Then we linearize the pseudo-tensor and use its average over a macroscopic region to find the energy and momentum carried by the
F.F. Faria
doaj   +1 more source

Fate of spin polarization in a relativistic fluid: An entropy-current analysis

open access: yesPhysics Letters B, 2019
We derive relativistic hydrodynamic equations with a dynamical spin degree of freedom on the basis of an entropy-current analysis. The first and second laws of local thermodynamics constrain possible structures of the constitutive relations including a ...
Koichi Hattori   +4 more
doaj   +1 more source

Noncommutative fluid dynamics in the K\"{a}hler parametrization

open access: yes, 2011
In this paper, we propose a first order action functional for a large class of systems that generalize the relativistic perfect fluids in the K\"{a}hler parametrization to noncommutative spacetimes.
A. Connes   +6 more
core   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

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