Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Enrico Morgante"'
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 2021, Iss 1, Pp 1-5 (2021)
We correct a minor point in section 3.2 of “Relaxion Fluctuations (Self-stopping Relaxion) and Overview of Relaxion Stopping Mechanisms”, JHEP 05 (2020) 080. Furthermore, we clarify the origin of equation (4.25). Finally, we add some plots that a
Externí odkaz:
https://doaj.org/article/b1c4db51bf1e4b2793171bf4a3c890b2
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-63 (2020)
Abstract In implementations of the electroweak scale cosmological relaxation mechanism proposed so far, the effect of the quantum fluctuations of the homogeneous relaxion field has been ignored. We show that they can grow during the classical cosmolo
Externí odkaz:
https://doaj.org/article/78fc06d2fdd24fa3b9b35ce971b7d8d2
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-48 (2020)
Abstract We investigate the production of axion quanta during the early universe evolution of an axion-like field rolling down a wiggly potential. We compute the growth of quantum fluctuations and their back-reaction on the homogeneous zero-mode. We
Externí odkaz:
https://doaj.org/article/7cd50f74c7c248f78ca6abc80a31cc3d
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-9 (2019)
We correct the mistakes in the original version of the paper and recalculate the relevant bounds on the Z′-mediated DM. The mistakes of the published version have to do with the calculation of the annihilation cross sections.
Externí odkaz:
https://doaj.org/article/211ae6232a1049f48d51aa980087ceb7
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-47 (2018)
Abstract We show that the mechanism of cosmological relaxation of the electroweak scale can take place independently of the inflation mechanism, thus relieving burdens from the original relaxion proposal. What eventually stops the (fast-rolling) rela
Externí odkaz:
https://doaj.org/article/e11d7a8bfca5472fb736aae7fe847c9c
Autor:
Enrico Morgante
Publikováno v:
Advances in High Energy Physics, Vol 2018 (2018)
I review the construction of simplified models for dark matter searches. After discussing the philosophy and some simple examples, I turn the attention to the aspect of the theoretical consistency and to the implications of the necessary extensions o
Externí odkaz:
https://doaj.org/article/cecc0bfe298a4b4da34914121c05b1df
Publikováno v:
Physical Review
We analyze the phase transition in improved holographic QCD to obtain an estimate of the gravitational wave signal emitted in the confinement transition of a pure SU(3) Yang-Mills dark sector. We derive the effective action from holography and show t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::310bb10764cb0c50424d7a09fb6a2026
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Autor:
Nayara Fonseca, Enrico Morgante
Publikováno v:
Physical Review
We investigate the interplay between early universe cosmology and dark matter direct detection, considering axion models with naturally suppressed couplings to photons. In the context of the cosmological relaxation of the electroweak scale, we focus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70aa32cc4995384e718c6436c4af0f28
http://repo.scoap3.org/api
http://repo.scoap3.org/api