Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Wolfram Ratzinger"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-37 (2024)
Abstract In an external electric or magnetic field, a gravitational wave (GW) may be converted into electromagnetic radiation. We present a coordinate-invariant framework to describe the GW signal in a detector that is based on this effect, such as c
Externí odkaz:
https://doaj.org/article/c2f8b7ee54fc4022a9db4d115ca8faa5
Autor:
Eric Madge, Enrico Morgante, Cristina Puchades-Ibáñez, Nicklas Ramberg, Wolfram Ratzinger, Sebastian Schenk, Pedro Schwaller
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-50 (2023)
Abstract In recent years, several pulsar timing array collaborations have reported first hints for a stochastic gravitational wave background at nano-Hertz frequencies. Here we elaborate on the possibility that this signal comes from new physics that
Externí odkaz:
https://doaj.org/article/ed739618ce6e456082517f5aef294468
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-33 (2021)
Abstract We analyze the phenomenon of axion fragmentation when an axion field rolls over many oscillations of a periodic potential. This is particularly relevant for the case of relaxion, in which fragmentation provides the necessary energy dissipati
Externí odkaz:
https://doaj.org/article/9a623222c79b484da9c86729628a24f2
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-24 (2019)
Abstract Conventional approaches to probing axions and axion-like particles (ALPs) typically rely on a coupling to photons. However, if this coupling is extremely weak, ALPs become invisible and are effectively decoupled from the Standard Model. Here
Externí odkaz:
https://doaj.org/article/a22a0a13b34c4ef1ac3945743fd202e7
Publikováno v:
SciPost Physics, Vol 11, Iss 1, p 001 (2021)
In this work, we present a lattice study of an axion - dark photon system in the early Universe and show that the stochastic gravitational wave (GW) background produced by this system may be probed by future GW experiments across a vast range of f
Externí odkaz:
https://doaj.org/article/95fcd4973ad44ea3be966f693e530152
Publikováno v:
SciPost Physics, Vol 10, Iss 2, p 047 (2021)
The NANOGrav collaboration has recently observed first evidence of a grav- itational wave background (GWB) in pulsar timing data. Here we explore the possibility that this GWB is due to new physics, and show that the signal can be well fit also with
Externí odkaz:
https://doaj.org/article/90e92a0805d24d9e9a0f0ca21f35dc59
Publikováno v:
SciPost Physics, Vol 12, Iss 5, p 171 (2022)
Gravitational waves provide a novel way to probe axions or axion-like particles coupled to a dark photon field, even in the absence of couplings to Standard Model particles. In the conventional misalignment mechanism, the generation of an observab
Externí odkaz:
https://doaj.org/article/859a9539cb4043aaab3e1e60eb5e6561
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-24 (2019)
Journal of High Energy Physics
Journal of High Energy Physics
Conventional approaches to probing axions and axion-like particles (ALPs) typically rely on a coupling to photons. However, if this coupling is extremely weak, ALPs become invisible and are effectively decoupled from the Standard Model. Here we show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4772ed2735e9be30efe12e6fab11079
http://link.springer.com/article/10.1007/JHEP01(2019)053
http://link.springer.com/article/10.1007/JHEP01(2019)053
Publikováno v:
Physical Review
To solve the hierarchy problem, the relaxion must remain trapped in the correct minimum, even if the electroweak symmetry is restored after reheating. In this scenario, the relaxion starts rolling again until the backreaction potential, with its set
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73eec0eaa5d972a6bc96ab927510e9e4
http://arxiv.org/abs/2105.12135
http://arxiv.org/abs/2105.12135
Publikováno v:
Physical Review
We have recently shown that axions and axion-like particles (ALPs) may emit an observable stochastic gravitational wave (GW) background when they begin to oscillate in the early universe. In this note, we identify the regions of ALP parameter space w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c28aa4f04a039d74a600cb4e5dc4d996
http://repo.scoap3.org/api
http://repo.scoap3.org/api