Results 31 to 40 of about 806,308 (335)

Homes’ law in holographic superconductor with linear-T resistivity

open access: yesJournal of High Energy Physics, 2022
Homes’ law, ρ s = Cσ DC T c , is a universal relation of superconductors between the superfluid density ρ s at zero temperature, the critical temperature T c and the electric DC conductivity σ DC at T c .
Hyun-Sik Jeong, Keun-Young Kim
doaj   +1 more source

Dielectric multi-momentum meta-transformer in the visible

open access: yesNature Communications, 2019
Here, the authors demonstrate a multi-momentum transformation metasurface. The orbital angular momentum meta-transformer reconstructs different vortex beams into on-axis distinct patterns, and the linear momentum meta-transformer converts red, green and ...
Lei Jin   +18 more
doaj   +1 more source

Developing momentum in vanishing index photonics

open access: yesLight: Science & Applications, 2022
Refractive index invariably describes the speed at which light passes through materials, and subsequently its perceived momentum. But what happens to these quantities as the index becomes zero? A new work explores this question, highlighting how momentum
Nathaniel Kinsey
doaj   +1 more source

Sharing a common origin between the rotational and linear doppler effects [PDF]

open access: yes, 2017
The well-known linear Doppler effect arises from the linear motion between source and observer, while the less well-known rotational Doppler effect arises from the rotational motion.
Allen   +40 more
core   +1 more source

Radial infall of two compact objects: 2.5PN linear momentum flux and associated recoil

open access: yes, 2012
The loss rate of linear momentum from a binary system composed of compact objects (radially falling towards each other under mutual gravitational influence) has been investigated using the multipolar post-Minkowskian approach.
Mishra, Chandra Kant
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Examples of identities and inequalities for the nonlinear term in the Navier–Stokes equation

open access: yesExamples and Counterexamples, 2023
In this paper, several examples of novel equations and inequalities for various forms of the non-linear term in the Navier–Stokes equations (NSE) are provided. The NSE are formulated from the conservation of linear momentum and mass conservation. However,
Jorge Reyes
doaj   +1 more source

The light-front gauge-invariant energy-momentum tensor [PDF]

open access: yes, 2015
We provide for the first time a complete parametrization for the matrix elements of the generic asymmetric, non-local and gauge-invariant canonical energy-momentum tensor, generalizing therefore former works on the symmetric, local and gauge-invariant ...
Lorcé, Cédric
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Perturbative construction of the two-dimensional O(N) non-linear sigma model with ERG

open access: yes, 2009
We use the exact renormalization group (ERG) perturbatively to construct the Wilson action for the two-dimensional O(N) non-linear sigma model. The construction amounts to regularization of a non-linear symmetry with a momentum cutoff.
Lutfuoglu, Bekir Can, Sonoda, Hidenori
core   +1 more source

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