9 papers
Stochastic Schwinger Effect: de Sitter and beyond
Lucas Vicente García-Consuegra, Azadeh Maleknejad
We develop a stochastic formulation of the Schwinger effect in de Sitter spacetime using the Schwinger--Keldysh (in-in) formalism, tailored to particle production by non-stationary…
Squashed Pyramid Interferometer Network (SPIN): Direct Access to Chirality of Cosmological Gravitational Waves
Dmitri E. Kharzeev, Azadeh Maleknejad, Saba Shalamberidze
The cosmological gravitational wave background provides a powerful window on parity-violating physics at energies far beyond the reach of terrestrial experiments. However, any colo…
The Stochastic Schwinger Effect
Lucas Vicente GarcÃa-Consuegra, Azadeh Maleknejad
We formulate a stochastic generalisation of the Schwinger effect, extending pair production to statistically fluctuating gauge-field backgrounds. Our approach captures realistic fi…
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…
QuGrav: Bringing gravitational waves to light with Qumodes
Dmitri E. Kharzeev, Azadeh Maleknejad, Saba Shalamberidze
We propose using qumodes, quantum bosonic modes, for detecting high-frequency gravitational waves via the inverse Gertsenshtein effect, where a gravitational wave resonantly conver…
When Geometry Radiates Review: Gravitational Waves in Theory, Cosmology, and Observation
Azadeh Maleknejad
Gravitational waves provide a unique window into gravity, cosmology, and high-energy physics, enabling the exploration of fundamental phenomena across a wide range of scales. This…