Results 81 to 90 of about 292,949 (385)

New confining force solution of QCD axion domain wall problem

, 2014
The serious cosmological problems created by the axion-string/axion-domain-wall system in standard axion models are alleviated by positing the existence of a new confining force.
Barr, S. M., Kim, Jihn E.
core   +1 more source

Resonantly Enhanced Axion-Photon Regeneration [PDF]

, 2007
We point out that photon regeneration-experiments that search for the axion, or axion-like particles, may be resonantly enhanced by employing matched Fabry-Perot optical cavities encompassing both the axion production and conversion magnetic field ...
A. A. Ansel’m, A. A. Ansel’m, D. B. Tanner, G. G. Raffelt, Karl van Bibber, P. Sikivie   +5 more
core   +2 more sources

Development of axion haloscopes for high-mass search at CAPP

Frontiers in Physics
The axion offers a well-motivated solution to two fundamental questions in modern physics: the strong CP problem and the dark matter mystery. Cavity haloscopes, exploiting resonant enhancement of photon signals, provide the most sensitive searches for ...
SungWoo Youn, Junu Jeong, Yannis K. Semertzidis, Yannis K. Semertzidis   +3 more
doaj   +1 more source

Axion dark matter with thermal friction

Journal of High Energy Physics, 2023
Cosmological evolution of axion field in the early universe might be significantly affected by a thermal friction induced by the axion coupling to thermalized hidden sector.
Kiwoon Choi, Sang Hui Im, Hee Jung Kim, Hyeonseok Seong   +3 more
doaj   +1 more source

Robust cosmological constraints on axion-like particles [PDF]

Journal of Cosmology and Astroparticle Physics, 2020
Axion-like particles with masses in the keV-GeV range have a profound impact on the cosmological evolution of our Universe, in particular on the abundance of light elements produced during Big Bang Nucleosynthesis.
Paul Frederik Depta, Marco Hufnagel, K. Schmidt-Hoberg   +2 more
semanticscholar   +1 more source

Diluting the inflationary axion fluctuation by a stronger QCD in the early Universe

Physics Letters B, 2015
We propose a new mechanism to suppress the axion isocurvature perturbation, while producing the right amount of axion dark matter, within the framework of supersymmetric axion models with the axion scale induced by supersymmetry breaking.
Kiwoon Choi, Eung Jin Chun, Sang Hui Im, Kwang Sik Jeong   +3 more
doaj   +1 more source

Implications of protecting the QCD axion in the dual description

Journal of High Energy Physics, 2023
The QCD axion can be formulated in a dual description as a massive 2-form field. In this picture, the QCD axion quality problem translates into the question if there are additional 3-forms coupled to the axion other than the QCD 3-form that emerges at ...
Gongjun Choi, Jacob Leedom
doaj   +1 more source

Mississippi State Axion Search: A Light Shining though a Wall ALP Search

, 2014
The elegant solutions to the strong CP problem predict the existence of a particle called axion. Thus, the search for axion like particles (ALP) has been an ongoing endeavor.
Dutta, Dipangkar, Formaggio, Joseph, Fowler, Nicholas, Gaerlan, Mikhail, Jiang, Yipeng, Madsen, John, MASS Collaboration, Mohanmurthy, Prajwal, Oblath, Noah, Powers, Adam, Ray, Amy, Riehle, Robertson   +11 more
core   +1 more source

CAST constraints on the axion-electron coupling [PDF]

, 2013
In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axiorecombination, the "BCA processes." Based on a new calculation of this flux, including ...
Barth, Klaus, Belov, Alexander, Beltran, Berta, Bibber, Karl van, Bräuninger, Heinrich, Carmona, José Manuel, Collar, Juan I., Dafni, Theopisti, Davenport, Martyn, Di Lella, Luigi, Eleftheriadis, Christos, Englhauser, Jakob, Fanourakis, George, Ferrer-Ribas, Ester, Fischer, Horst, Franz, Jürgen, Friedrich, Peter, Galán, Javier, García, J. A., Geralis, Theodoros, Giomataris, Ioanis, Gninenko, Sergei, Gómez, Héctor, Hasinoff, Michael D., Heinsius, Fritz Herbert, Hoffmann, Dieter H. H., Irastorza, Igor Garcia, Jacoby, Joachim, Jakovčić, Kresimir, Kang, Donghwa, Kotthaus, Rainer, Kousouris, Konstantinos, Krčmar, Milica, Kuster, M., Königsmann, Kay, Lakić, Biljana, Liolios, Anastasios, Ljubičić, Ante, Lutz, Gerhard, Luzón, Gloria, Miller, David W., Papaevangelou, Thomas, Pivovaroff, Mike J., Raffelt, Georg, Redondo, Javier, Riege, Hans, Rodríguez, A., Ruz, Jaime, Savvidis, Ilias, Semertzidis, Yannis, Stewart, Laura, Vieira, Joaquin D., Villar, José A., Vogel, Julia K., Walckiers, Louis, Zioutas, Konstantin   +55 more
core   +2 more sources

Is the universal string axion the QCD axion? [PDF]

Nuclear Physics B, 2006
We consider the class of effective supergravity theories from the weakly coupled heterotic string in which local supersymmetry is broken by gaugino condensation in a hidden sector, with dilaton stabilization achieved through corrections to the classical dilaton K hler potential. If there is a single hidden condensing (simple) gauge group, the axion is
Gaillard, Mary K., Kain, Ben
openaire   +4 more sources