7 papers
Status of light inflaton: from inflation to laboratory
Niloy Mondal, Shashwat Sharma, Mathew Thomas Arun +1
We investigate the viability of the light inflaton scenario in light of the latest inflationary constraints from the Atacama Cosmology Telescope (ACT), together with bounds from co…
A Non-Holomorphic Modular Framework for Resonant Leptogenesis with Gravitational Wave Signatures
Mitesh Kumar Behera, Jaydeb Das, Niloy Mondal
We study a type-I seesaw framework based on non-holomorphic modular symmetry, where polyharmonic Maaà forms construct the Yukawa couplings and right-handed neutrino (RHN) Ma…
From WIMP to FIMP during reheating: collider vs non-collider probes for p-wave annihilation
Dipankar Pradhan, Niloy Mondal, Abhik Sarkar +4
By examining the transition from freeze-out to freeze-in dark matter (DM) production within the framework of perturbative reheating, where DM interacts with the visible sector thro…
Exploring Leptogenesis, WIMP Dark Matter, and Gravitational Waves in an extended Scalar Framework
Subhaditya Bhattacharya, Niloy Mondal, Arunansu Sil
We explore extensions of type I seesaw framework with a scalar mediator () connecting to a complex scalar dark field (), and right handed neutrinos (), with an aim to c…
Lepton Collider as a Window to Reheating via Freezing Out Dark Matter Detection
Subhaditya Bhattacharya, Anupam Ghosh, Niloy Mondal +1
We investigate a particle dark matter (DM) scenario where the DM interaction with the Standard Model are mediated by a leptophilic effective operator. Unlike conventional WIMP scen…
Two-component Dark Matter and low scale Thermal Leptogenesis
Subhaditya Bhattacharya, Devabrat Mahanta, Niloy Mondal +1
The observable cosmos exhibits sizable baryon asymmetry, small active neutrino masses, and the presence of dark matter (DM). To address these phenomena together, we propose a two c…