6 papers
Complementarity between gravitational wave signatures and Higgs precision measurements of a classically conformal hidden U(1) extended Standard Model
Victor Baules, Nobuchika Okada
We consider a classically conformal extension of the Standard Model (SM) with a hidden gauge symmetry, where the symmetry is radiatively broken via the Coleman-Weinbe…
Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
Dilip Kumar Ghosh, Anish Ghoshal, Koustav Mukherjee +2
We study the impact of non-thermal leptogenesis on the spectrum of gravitational waves (GWs) produced by a strong first-order phase transition in the early Universe. We consider a…
Kination-like Era Driven by the Effective Inflaton/Higgs Potential
Anish Ghoshal, Nobuchika Okada, Arnab Paul
Based on the minimal extended Standard Model, we explore cosmic inflation where the Higgs field serves as the inflaton. We demonstrate that a stiff era with an eq…
Truth, beauty, and goodness in grand unification: a machine learning approach
Shinsuke Kawai, Nobuchika Okada
We investigate the flavour sector of the supersymmetric Grand Unified Theory (GUT) model using machine learning techniques. The minimal model is known to predict fe…
Aspects of Non-local QED and the Weak Gravity Conjecture
Fayez Abu-Ajamieh, Nobuchika Okada, Sudhir K. Vempati
We use the Weak Gravity Conjecture (WGC) to investigate the impact of charge dequantization arising from non-local QED on the scale of non-locality of neutrinos. We find this scale…
Non-perturbative Origin of the Electroweak Scale with Dyson-Schwinger: Fermionic Mass Gap and Higher-order Excitations
Marco Frasca, Anish Ghoshal, Nobuchika Okada
We study interaction of a fermion field with a scalar field and analyze the spectrum of the theory obtained in this way. It is shown that due to non-perturbative dynamics i…