1.2k citations · 13.9k across the 137 of their papers we have counts for
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Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution
Richard von Eckardstein, Marco Peloso, Kai Schmitz +2
Axion inflation coupled to Abelian gauge fields via a Chern-Simons-like term of the form represents an attractive inflationary model with a rich phenomenology, includ…
Probing Virtual ALPs by Precision Phase Measurements: Time-Varying Magnetic Field Background
Mohammad Sharifian, Moslem Zarei, Mehdi Abdi +2
We propose an experimental scheme for detecting the effects of off-shell axion-like particles (ALPs) through optical cavities. In this proposed experiment, linearly polarized photo…
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…
Enhancement of the Dark Matter Abundance Before Reheating: Applications to Gravitino Dark Matter
Marcos A. G. Garcia, Yann Mambrini, Keith A. Olive +1
In the first stages of inflationary reheating, the temperature of the radiation produced by inflaton decays is typically higher than the commonly defined reheating temperature $T_{…
Low-Scale D-term Inflation and the Relaxion
Jason L. Evans, Tony Gherghetta, Natsumi Nagata +1
We present a dynamical cosmological solution that simultaneously accounts for the early inflationary stage of the Universe and solves the supersymmetric little hierarchy problem vi…
Leptogenesis Via Neutrino Production During Higgs Condensate Relaxation
Lauren Pearce, Louis Yang, Alexander Kusenko +1
During inflation, scalar fields, including the Higgs boson, may acquire a nonzero vacuum expectation value, which must later relax to the equilibrium value during reheating. In the…
Affleck-Dine Sneutrino Inflation
Jason L. Evans, Tony Gherghetta, Marco Peloso
Motivated by the coincidence between the Hubble scale during inflation and the typical see-saw neutrino mass scale, we present a supergravity model where the inflaton is identified…
Stability analysis of 5D gravitational solutions with N bulk scalar fields
Tony Gherghetta, Marco Peloso
We study the stability of 5D gravitational solutions containing an arbitrary number of scalar fields. A closed set of equations is derived which governs the background and perturba…
Large Nongaussianity in Axion Inflation
Neil Barnaby, Marco Peloso
The inflationary paradigm has enjoyed phenomenological success, however, a compelling particle physics realization is still lacking. The key obstruction is that the requirement of…
The gravitino coupling to broken gauge theories applied to the MSSM
Feng Luo, Keith A. Olive, Marco Peloso
We consider gravitino couplings in theories with broken gauge symmetries. In particular, we compute the single gravitino production cross section in W+ W- fusion processes. Despite…
The nonperturbative decay of SUSY flat directions
A. E. Gumrukcuoglu, Keith A. Olive, Marco Peloso +1
We compute the nonperturbative decay of supersymmetric flat directions due to their D-term potential. Flat directions can develop large vacuum expectation values (vevs) during infl…
The Fate of SUSY Flat Directions and their Role in Reheating
Keith A. Olive, Marco Peloso
We consider the role of supersymmetric flat directions in reheating the Universe after inflation. One or more flat directions can develop large vevs during inflation, which can pot…
Preheating with Trilinear Interactions: Tachyonic Resonance
J. F. Dufaux, G. N. Felder, L. Kofman +2
We investigate the effects of bosonic trilinear interactions in preheating after chaotic inflation. A trilinear interaction term allows for the complete decay of the massive inflat…
Equation of state and Beginning of Thermalization After Preheating
Dmitry I. Podolsky, Gary N. Felder, Lev Kofman +1
We study the out-of-equilibrium nonlinear dynamics of fields after post-inflationary preheating. During preheating, the energy in the homogeneous inflaton is exponentially rapidly…
Completing Natural Inflation
Jihn E. Kim, Hans Peter Nilles, Marco Peloso
If the inflaton is a pseudo-scalar axion, the axion shift symmetry can protect the flatness of its potential from too large radiative corrections. This possibility, known as natura…
BRANECODE: A Program for Simulations of Braneworld Dynamics
Johannes Martin, Gary N. Felder, Andrei V. Frolov +2
We describe an algorithm and a C++ implementation that we have written and made available for calculating the fully nonlinear evolution of 5D braneworld models with scalar fields.…
Exact identification of the radion and its coupling to the observable sector
Lev Kofman, Johannes Martin, Marco Peloso
Braneworld models in extra dimensions can be tested in laboratory by the coupling of the radion to the Standard Model fields. The identification of the radion as a canonically norm…
Quintessence from Shape Moduli
Marco Peloso, Erich Poppitz
We show that shape moduli in sub-millimeter extra dimensional scenarios, addressing the gauge hierarchy problem, can dominate the energy density of the universe today. In our scena…
Super-GZK Photons from Photon-Axion Mixing
Csaba Csaki, Nemanja Kaloper, Marco Peloso +1
We show that photons with energies above the GZK cutoff can reach us from very distant sources if they mix with light axions in extragalactic magnetic fields. The effect which enab…
Leptogenesis and rescattering in supersymmetric models
Lotfi Boubekeur, Sacha Davidson, Marco Peloso +1
The observed baryon asymmetry of the Universe can be due to the violating decay of heavy right handed (s)neutrinos. The amount of the asymmetry depends crucially on their num…
Moduli from Cosmic Strings
Marco Peloso, Lorenzo Sorbo
Moduli fields are generally present in superstring--inspired models. They are typically characterized by masses of the order of the supersymmetry breaking scale and by interactions…
Nonthermal production of gravitinos and inflatinos in the Inflationary Universe
Hans Peter Nilles, Marco Peloso
The success of primordial nucleosynthesis imposes stringent bounds on the abundance of gravitational relics. This is particularly true for gravitinos, which - for models with gravi…
Fermion production from preheating-amplified metric perturbations
Bruce A. Bassett, Marco Peloso, Lorenzo Sorbo +1
We study gravitational creation of light fermions in the presence of classical scalar metric perturbations about a flat Friedmann-Lemaitre- Robertson-Walker (FLRW) background. Thes…
The Inflatino Problem in Supergravity Inflationary Models
Hans Peter Nilles, Keith A. Olive, Marco Peloso
We consider the potential problems due to the production of inflatinos and gravitinos after inflation. Inflationary models with a single scale set by the microwave background aniso…