Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Servant, Geraldine"'
The axion kinetic misalignment mechanism (KMM) opens the possibility of explaining dark matter for almost any axion mass and decay constant that are not accessible by the standard misalignment mechanism, in particular at low values of the axion decay
Externí odkaz:
http://arxiv.org/abs/2408.08355
Publikováno v:
PoS - Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T03 Dark Matter
The misalignment mechanism for axion-like particles (ALPs) is a leading explanation for dark matter. In this work we investigate ALPs with non-periodic potentials, which allow for large misalignment of the field from the minimum and make it possible
Externí odkaz:
http://arxiv.org/abs/2402.10313
Autor:
Servant, Géraldine, Simakachorn, Peera
Publikováno v:
Phys. Rev. D 109, 103538 (2024)
We investigate gravitational-wave backgrounds (GWBs) of primordial origin that would manifest only at ultra-high frequencies, from kilohertz to 100 gigahertz, and leave no signal at either LIGO, Einstein Telescope, Cosmic Explorer, LISA, or pulsar-ti
Externí odkaz:
http://arxiv.org/abs/2312.09281
Electroweak Baryogenesis (EWBG) paired with the Composite Higgs (CH) scenario provides a well-motivated and testable framework for addressing the questions of the origin of the matter-antimatter asymmetry and the naturalness of the electroweak scale.
Externí odkaz:
http://arxiv.org/abs/2307.14426
Autor:
Servant, Géraldine, Simakachorn, Peera
Publikováno v:
Phys.Rev.D 108 (2023) 12, 123516
Models that produce Axion-Like-Particles (ALP) after cosmological inflation due to spontaneous $U(1)$ symmetry breaking also produce cosmic string networks. Those axionic strings lose energy through gravitational wave emission during the whole cosmol
Externí odkaz:
http://arxiv.org/abs/2307.03121
Publikováno v:
JCAP10(2023)068
Axion-like particles (ALPs) are leading candidates to explain the dark matter in the universe. Their production via the misalignment mechanism has been extensively studied for cosine potentials characteristic of pseudo-Nambu-Goldstone bosons. In this
Externí odkaz:
http://arxiv.org/abs/2305.03756
We present an update on the status of electroweak baryogenesis in minimal composite Higgs models. The particularity of this framework is that the electroweak phase transition can proceed simultaneously with the confinement phase transition of the new
Externí odkaz:
http://arxiv.org/abs/2212.11953
The dilaton is predicted in various extensions of the standard model containing sectors with an approximate spontaneously-broken conformal invariance. As a Goldstone boson of a spontaneously broken symmetry, the dilaton can naturally be one of the li
Externí odkaz:
http://arxiv.org/abs/2212.00056
Cosmological relaxation of the electroweak scale via Higgs-axion interplay, named as relaxion mechanism, provides a dynamical solution to the Higgs mass hierarchy. In the original proposal by Graham, Kaplan and Rajendran, the relaxion abundance today
Externí odkaz:
http://arxiv.org/abs/2211.15694
We revisit the original proposal of cosmological relaxation of the electroweak scale by Graham, Kaplan and Rajendran in which the Higgs mass is scanned during inflation by an axion field, the relaxion. We investigate the regime where the relaxion is
Externí odkaz:
http://arxiv.org/abs/2210.01148