Zobrazeno 1 - 10
of 3 152
pro vyhledávání: '"A, Mambrini"'
Autor:
Choi, Gongjun, Garcia, Marcos A. G., Ke, Wenqi, Mambrini, Yann, Olive, Keith A., Verner, Sarunas
We study the effects on particle production of a Planck-suppressed coupling between the inflaton and a scalar dark matter candidate, $\chi$. In the absence of this coupling, the dominant source for the relic density of $\chi$ is the long wavelength m
Externí odkaz:
http://arxiv.org/abs/2406.06696
In this talk, based on arXiv:2301.11345, arXiv:2305.16388, arXiv:2311.12694, we discuss the production of primordial gravitational waves (GW) sourced by graviton bremsstrahlung during inflationary reheating. For reheating, we consider inflaton decays
Externí odkaz:
http://arxiv.org/abs/2405.09620
We apply deep learning techniques to the late-time turbulent regime in a post-inflationary model where a real scalar inflaton field and the standard model Higgs doublet interact with renormalizable couplings between them. After inflation, the inflato
Externí odkaz:
http://arxiv.org/abs/2405.08901
We compute the relic abundance of dark matter in the presence of Primordial Black Holes (PBHs) beyond the semiclassical approximation. We take into account the quantum corrections due to the memory burden effect, which is assumed to suppress the blac
Externí odkaz:
http://arxiv.org/abs/2404.16815
Autor:
Arcadi, Giorgio, Cabo-Almeida, David, Dutra, Maíra, Ghosh, Pradipta, Lindner, Manfred, Mambrini, Yann, Neto, Jacinto P., Pierre, Mathias, Profumo, Stefano, Queiroz, Farinaldo S.
Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, an
Externí odkaz:
http://arxiv.org/abs/2403.15860
We explore the possibility of producing the observed matter-antimatter asymmetry of the Universe uniquely from the evaporation of primordial black holes (PBH) that are formed in an inflaton-dominated background. Considering the inflaton $(\phi)$ to o
Externí odkaz:
http://arxiv.org/abs/2403.05626
We consider the effects of a bare mass term for the inflaton, when the inflationary potential takes the form $V(\phi)= \lambda \phi^k$ about its minimum with $k \ge 4$. We concentrate on $k=4$, but discuss general cases as well. Further, we assume $\
Externí odkaz:
http://arxiv.org/abs/2402.16958
Autor:
Mambrini, Matthieu, Poilblanc, Didier
Publikováno v:
SciPost Phys. 17, 011 (2024)
In condensed matter, Chiral Spin Liquids (CSL) are quantum spin analogs of electronic Fractional Quantum Hall states (in the continuum) or Fractional Chern Insulators (on the lattice). As the latter, CSL are remarquable states of matter, exhibiting t
Externí odkaz:
http://arxiv.org/abs/2402.14141
We investigate the stochastic gravitational wave (GW) spectrum resulting from graviton bremsstrahlung during inflationary reheating. We focus on an inflaton $\phi$ oscillating around a generic monomial potential $V(\phi) \propto \phi^n$, considering
Externí odkaz:
http://arxiv.org/abs/2311.12694
We compute the density of a spin-$\frac32$ particle, the raritron, produced at the end of inflation due to gravitational interactions. We consider a background inflaton condensate as the source of this production, mediated by the exchange of a gravit
Externí odkaz:
http://arxiv.org/abs/2309.15146