Results 21 to 30 of about 16,280 (210)

Planck data and ultralight axions [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2015
15 pages, 4 ...
Csáki, Csaba   +2 more
openaire   +4 more sources

Multifield ultralight dark matter

open access: yesPhysical Review D, 2023
11 pages, 7 figures, to be submitted to ...
Mateja Gosenca   +6 more
openaire   +3 more sources

Ultralight, ultrastiff mechanical metamaterials [PDF]

open access: yesScience, 2014
Microlattices make marvelous materials Framework or lattice structures can be remarkably strong despite their very low density. Using a very precise technique known as projection microstereolithography, Zheng et al. fabricated octet microlattices from polymers, metals, and ceramics.
Zheng, Xiaoyu   +12 more
openaire   +4 more sources

Constraints on ultralight axions, vector gauge bosons, and unparticles from geodetic and frame-dragging measurements

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The geodetic and frame-dragging effects are the direct consequences of the spacetime curvature near Earth which can be probed from the Gravity probe B (GP-B) satellite.
Tanmay Kumar Poddar
doaj   +1 more source

Verification of Industrial Worker Walking Efficiency with Wearable Hip Exoskeleton

open access: yesApplied Sciences, 2023
In highly mobile workplaces, wearable walking-assistant devices reduce muscle fatigue in workers’ lower extremities and increase energy efficiency. In our study, we verify this following the development of an ultralight wearable hip exoskeleton for ...
Yunhee Chang   +6 more
doaj   +1 more source

Editorial for the Special Issue: “Aerogel Hybrids and Nanocomposites”

open access: yesGels, 2023
Aerogel materials are porous ultralight solid materials obtained from gels, wherein a gas, commonly air, replaces the liquid component [...]
István Lázár, Melita Menelaou
doaj   +1 more source

Characterizing the community use of an ultralight wheelchair with "on the fly" adjustable seating functions: A pilot study. [PDF]

open access: yesPLoS ONE, 2017
An ultralight manual wheelchair that allows users to independently adjust rear seat height and backrest angle during normal everyday usage was recently commercialized.
Johanne Mattie   +3 more
doaj   +1 more source

Bulk Fermions in Multi-Brane Worlds [PDF]

open access: yes, 2001
We study bulk fermion fields in various multi-brane models with localized gravity. The chiral zero mode that these models support can be identified as a right-handed sterile neutrino. In this case small neutrino Dirac masses can naturally appear due to a
Mouslopoulos, Stavros
core   +4 more sources

Signatures of ultralight dark matter in neutrino oscillation experiments

open access: yesJournal of High Energy Physics, 2021
We study how neutrino oscillations could probe the existence of ultralight bosonic dark matter. Three distinct signatures on neutrino oscillations are identified, depending on the mass of the dark matter and the specific experimental setup.
Abhish Dev   +2 more
doaj   +1 more source

Dark glueballs and their ultralight axions [PDF]

open access: yesPhysical Review D, 2018
Dark gauge sectors and axions are well-motivated in string theory. We demonstrate that if a confining gauge sector gives rise to dark glueballs that are a fraction of the dark matter, and the associated axion has a decay constant near the string scale, then this axion is ultralight and naturally realizes the fuzzy dark matter scenario with a modest ...
Halverson, J   +3 more
openaire   +2 more sources

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