359 citations · 1.8k across the 36 of their papers we have counts for
11 papers · 1 filter
Gravitational ABJ Anomaly, Stochastic Matter Production, and Leptogenesis
Azadeh Maleknejad
Partially chiral stochastic gravitational wave backgrounds can arise from various processes in the early Universe. The gravitational ABJ anomaly links the chirality of the gravitat…
Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter
Azadeh Maleknejad, Joachim Kopp
The minimal coupling of massless fermions to gravity does not allow for their gravitational production solely based on the expansion of the Universe. We argue that this changes in…
Snowmass Theory Frontier: Astrophysics and Cosmology
Daniel Green, Joshua T. Ruderman, Benjamin R. Safdi +84
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. This Report is prepared as the TF09 "Astrophy…
Ultra-Light Pion and Baryon WIMPzilla Dark Matter
Azadeh Maleknejad, Evan McDonough
We consider a dark confining gauge theory with millicharged Ultra-Light Pions (ULP) and heavy baryons as dark matter candidates. The model simultaneously realizes the ultra-light (…
New Ideas in Baryogenesis: A Snowmass White Paper
Gilly Elor, Julia Harz, Seyda Ipek +21
The Standard Model of Particle Physics cannot explain the observed baryon asymmetry of the Universe. This observation is a clear sign of new physics beyond the Standard Model. Ther…
Chiral Anomaly in SU(2)-Axion Inflation and the New Prediction for Particle Cosmology
Azadeh Maleknejad
Upon embedding the axion-inflation in the minimal left-right symmetric gauge extension of the SM with gauge group , [arXiv:2012.11516] prop…
SU(2) and its Axion in Cosmology: A common Origin for Inflation, Cold Sterile Neutrinos, and Baryogenesis
Azadeh Maleknejad
We introduce an axion-inflation model embedded in the Left-Right symmetric extension of the SM in which is coupled to the axion. This model merges three milestones of modern…
Gravitational Leptogenesis in the Axion Inflation with an SU(2) gauge field
Azadeh Maleknejad
We present an intrinsic leptogenesis mechanism in models of axion inflation with a classical SU(2) gauge field. The gauge field is coupled to the axion with a Chern-Simons interact…
Axion Inflation with an SU(2) Gauge Field: Detectable Chiral Gravity Waves
Azadeh Maleknejad
We study a single field axion inflation model in the presence of an SU(2) gauge field with a small vev. In order to make the analysis as model-independent as possible, we consider…
Non-Abelian Gauge Field Inflation
A. Maleknejad, M. M. Sheikh-Jabbari
In [arXiv:1102.1513] we introduced an inflationary scenario, Non-Abelian Gauge Field Inflation or gauge-flation for short, in which slow-roll inflation is driven by non-Abelian gau…
Gauge-flation: Inflation From Non-Abelian Gauge Fields
A. Maleknejad, M. M. Sheikh-Jabbari
Inflationary models are usually based on dynamics of one or more scalar fields coupled to gravity. In this work we present a new class of inflationary models, gauge-flation or non-…