909 citations · 2.4k across the 33 of their papers we have counts for
30 papers · 1 filter
Effects of Fragmentation on Post-Inflationary Reheating
Marcos A. G. Garcia, Mathieu Gross, Yann Mambrini +3
We consider the effects of fragmentation on the post-inflationary epoch of reheating. In simple single field models of inflation, an inflaton condensate undergoes an oscillatory ph…
Reheating after Inflaton Fragmentation
Marcos A. G. Garcia, Mathias Pierre
In the presence of self-interactions, the post-inflationary evolution of the inflaton field is driven into the non-linear regime by the resonant growth of its fluctuations. The onc…
A New Window into Gravitationally Produced Scalar Dark Matter
Marcos A. G. Garcia, Mathias Pierre, Sarunas Verner
Conventional scenarios of purely gravitationally produced dark matter with masses below the Hubble parameter at the end of inflation are in tension with Cosmic Microwave Background…
Isocurvature Constraints on Scalar Dark Matter Production from the Inflaton
Marcos A. G. Garcia, Mathias Pierre, Sarunas Verner
We investigate the production of a spectator scalar dark matter field that is directly coupled to the inflaton during inflation and reheating. We consider two specific inflationary…
Higgs-boson visible and invisible constraints on hidden sectors
Thomas Biekötter, Mathias Pierre
We investigate the impact of interactions between hidden sectors and the discovered Higgs boson , allowing for additional invisible decay channels of . We perform…
Scalar Dark Matter Production from Preheating and Structure Formation Constraints
Marcos A. G. Garcia, Mathias Pierre, Sarunas Verner
We investigate the out-of-equilibrium production of scalar dark matter (DM) from the inflaton condensate during inflation and reheating. We assume that this scalar couples only to…
WIMP Dark Matter in the USSM
J. A. Aguilar-Saavedra, D. E. López-Fogliani, C. Muñoz +1
The USSM is a extension of the SSM supersymmetric model, where baryon-number-violating operators as well as explicit mass terms are forbidden, and the potential dom…
Inverse Seesaw, dark matter and the Hubble tension
Enrique Fernandez-Martinez, Mathias Pierre, Emanuelle Pinsard +1
We consider the inverse Seesaw scenario for neutrino masses with the approximate Lepton number symmetry broken dynamically by a scalar with Lepton number two. We show that the Majo…
Metastable Conformal Dark Matter
Philippe Brax, Kunio Kaneta, Yann Mambrini +1
We show that a metastable dark matter candidate arises naturally from the conformal transformation between the Einstein metric, where gravitons are normalised states, and the Jorda…
Disformal Dark Matter
Philippe Brax, Kunio Kaneta, Yann Mambrini +1
We generalize dark matter production to a two-metric framework whereby the physical metric, which couples to the Standard Model (SM), is conformally and/or disformally related to t…
How warm are non-thermal relics? Lyman- bounds on out-of-equilibrium dark matter
Guillermo Ballesteros, Marcos A. G. Garcia, Mathias Pierre
We investigate the power spectrum of Non-Cold Dark Matter (NCDM) produced in a state out of thermal equilibrium. We consider dark matter production from the decay of scalar condens…
Dark Matter candidates in a Type-II radiative neutrino mass model
Roberto A. Lineros, Mathias Pierre
We explore the connection between Dark Matter and neutrinos in a model inspired by radiative Type-II seessaw and scotogenic scenarios. In our model, we introduce new electroweakly…
Energy-Momentum portal to dark matter and emergent gravity
Pascal Anastasopoulos, Kunio Kaneta, Yann Mambrini +1
We propose a new scenario where dark matter belongs to a secluded sector coupled to the Standard Model through energy--momentum tensors. Our model is motivated by constructions whe…
A Model of Metastable EeV Dark Matter
Emilian Dudas, Lucien Heurtier, Yann Mambrini +2
We propose a model where a long-lived pseudoscalar EeV particle can be produced with sufficient abundance so as to account for the cold dark matter density, despite having a Planck…
A testable hidden-sector model for Dark Matter and neutrino masses
Julia Gehrlein, Mathias Pierre
We consider a minimal extension of the Standard Model with a hidden sector charged under a dark local gauge group, accounting simultaneously for light neutrino masses and t…
Vector SIMP dark matter with approximate custodial symmetry
Soo-Min Choi, Hyun Min Lee, Yann Mambrini +1
We consider a novel scenario for Vector Strongly Interacting Massive Particle (VSIMP) dark matter with local symmetry in the dark sector. Similarly to the…
A Dark Matter Interpretation of the ANITA Anomalous Events
Lucien Heurtier, Yann Mambrini, Mathias Pierre
The ANITA collaboration recently reported the detection of two anomalous upward-propagating extensive air showers exiting the Earth with relatively large emergence angles and energ…
Dark Matter phenomenology : from simplified WIMP models to refined alternative solutions
Mathias Pierre
One of the most puzzling problems of modern physics is the identification of the nature a non-relativistic matter component present in the universe, contributing to more than 25$\%…
Cosmology With a Very Light Gauge Boson
Miguel Escudero, Dan Hooper, Gordan Krnjaic +1
In this paper, we explore in detail the cosmological implications of an abelian gauge extension of the Standard Model featuring a light and weakly coupled . Such a sc…
Freezing-in dark matter through a heavy invisible
Gautam Bhattacharyya, Maíra Dutra, Yann Mambrini +1
We demonstrate that in a class of the extension of the Standard Model (SM), under which all the Standard Model matter fields are uncharged and the additional neutral gauge…
Spin-2 Portal Dark Matter
Nicolas Bernal, Maira Dutra, Yann Mambrini +3
We generalize models invoking a spin-2 particle as a mediator between the dark sector and the Standard Model. We show that a massive spin-2 messenger can efficiently play the role…
Flavourful portal for vector-like neutrino Dark Matter and
Adam Falkowski, Stephen F. King, Elena Perdomo +1
We discuss a flavourful portal model with a coupling to fourth-family singlet Dirac neutrino dark matter. In the absence of mixing, the is fermiophobic, having no couplin…
Vector SIMP dark matter
Soo-Min Choi, Yonit Hochberg, Eric Kuflik +4
Strongly Interacting Massive Particles (SIMPs) have recently been proposed as light thermal dark matter relics. Here we consider an explicit realization of the SIMP mechanism in th…
portal to Chern-Simons Dark Matter
Giorgio Arcadi, Pradipta Ghosh, Yann Mambrini +2
We study the phenomenological credibility of a vectorial dark matter, coupled to a portal through Chern-Simons interaction. We scrutinize two possibilities of connecting a $Z'…