Results 71 to 80 of about 292,949 (385)

The Quest for an Intermediate-Scale Accidental Axion and Further ALPs [PDF]

, 2014
The recent detection of the cosmic microwave background polarimeter experiment BICEP2 of tensor fluctuations in the B-mode power spectrum basically excludes all plausible axion models where its decay constant is above $10^{13}$ GeV.
Dias, A. G., Machado, A. C. B., Nishi, C. C., Ringwald, A., Vaudrevange, P.   +4 more
core   +2 more sources

QCD Axion and Quintessential Axion [PDF]

, 2004
The axion solution of the strong CP problem is reviewed together with the other strong CP solutions. We also point out the quintessential axion(quintaxion) whose potential can be extremely flat due to the tiny ratio of the hidden sector quark mass and the intermediate hidden sector scale.
openaire   +2 more sources

Dark photon relic dark matter production through the dark axion portal [PDF]

, 2017
We present a new mechanism to produce the dark photon ($\gamma'$) in the early universe with a help of the axion ($a$) using a recently proposed dark axion portal. The dark photon, a light gauge boson in the dark sector, can be a relic dark matter if its
Kaneta, Kunio, Lee, Hye-Sung, Yun, Seokhoon   +2 more
core   +2 more sources

First Results from an Axion Haloscope at CAPP around 10.7  μeV. [PDF]

Physical Review Letters, 2020
The Center for Axion and Precision Physics Research at the Institute for Basic Science is searching for axion dark matter using ultralow temperature microwave resonators.
Ohjoon Kwon, Doyu Lee, W. Chung, Danho Ahn, Heesu Byun, F. Caspers, Hyoungsoon Choi, Jihoon Choi, Y. Chong, Hoyong Jeong, J. Jeong, Jihn E. Kim, Jinsu Kim, Ç. Kutlu, Jihnhwan Lee, M. Lee, Soohyung Lee, A. Matlashov, Seonjeong Oh, Seongtae Park, S. Uchaikin, S. Youn, Y. Semertzidis   +22 more
semanticscholar   +1 more source

An out-of-hours cell culture autopilot proof of concept based on a modular architecture using the SiLA2 open standard

SLAS Technology
There has been much talk and substantial progress in automated and flexible smart lab concepts in biopharma R&D. This is acknowledged to be important in enabling the acceleration of innovation and digitization of R&D operations.
Patrick Courtney, Raphael Lieberherr, William Speed, Ricardo Gaviria, Yordan Alipiev, Miguel van der Heijden, Oliver Peter   +6 more
doaj   +1 more source

Axion Kinetic Misalignment Mechanism.

Physical Review Letters, 2020
In the conventional misalignment mechanism, the axion field has a constant initial field value in the early Universe and later begins to oscillate. We present an alternative scenario where the axion field has a nonzero initial velocity, allowing an axion
R. Co, L. Hall, K. Harigaya
semanticscholar   +1 more source

Bell Violation in Primordial Cosmology

Universe, 2017
In this paper, we have worked on the possibility of setting up an Bell’s inequality violating experiment in the context of primordial cosmology following the fundamental principles of quantum mechanics. To set up this proposal, we have introduced a model-
Sayantan Choudhury, Sudhakar Panda, Rajeev Singh   +2 more
doaj   +1 more source

Experimental Targets for Photon Couplings of the QCD Axion

, 2018
The QCD axion's coupling to photons is often assumed to lie in a narrow band as a function of the axion mass. We demonstrate that several simple mechanisms, in addition to the photophilic clockwork axion already in the literature, can significantly ...
Agrawal, Prateek, Fan, JiJi, Reece, Matthew, Wang, Lian-Tao   +3 more
core   +1 more source

Probing Axions with Radiation from Magnetic Stars [PDF]

, 2006
Recent experiments suggest that polarized photons may couple significantly to pseudoscalar particles such as axions. We study the possible observational signatures of axion-photon coupling for radiation from magnetic stars, with particular focus on ...
C. Hagmann, C. Hagmann, Dong Lai, G. G. Pavlov, G. G. Raffelt, Jeremy Heyl, K. van Bibber, Yu. N. Gnedin   +7 more
core   +2 more sources

Approaching the Quantum Limit in Axion Detection at IBS-CAPP and IBS-DMAG

Physical Sciences Forum
We present the development of two complementary amplifier architectures for axion haloscope experiments, based on two types of Josephson Parametric Amplifiers (JPAs).
Sergey V. Uchaikin, Boris I. Ivanov, Arjan F. van Loo, Yasunobu Nakamura, MinSu Ko, Jinmyeong Kim, Saebyeok Ahn, Seonjeong Oh, Yannis K. Semertzidis, SungWoo Youn   +9 more
doaj   +1 more source