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Physics#Dark Matter, Cosmology, Particle Physics🔬 ResearchAnalyzed: Jan 3, 2026 19:05

Complex Scalar Dark Matter with Higgs Portals

Published:Dec 29, 2025 06:08
1 min read
ArXiv

Analysis

This paper investigates complex scalar dark matter, a popular dark matter candidate, and explores how its production and detection are affected by Higgs portal interactions and modifications to the early universe's cosmological history. It addresses the tension between the standard model and experimental constraints by considering dimension-5 Higgs-portal operators and non-standard cosmological epochs like reheating. The study provides a comprehensive analysis of the parameter space, highlighting viable regions and constraints from various detection methods.
Reference

“The paper analyzes complex scalar DM production in both the reheating and radiation-dominated epochs within an effective field theory (EFT) framework.”

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Research Paper#Cosmology, Inflation, Reheating🔬 ResearchAnalyzed: Jan 4, 2026 00:20

Gravity-Driven Reheating in Higgs Inflation

Published:Dec 25, 2025 12:57
1 min read
ArXiv

Analysis

This paper investigates a mechanism for reheating the universe after inflation, focusing on a Higgs inflationary scenario. It explores how gravitational effects alone can create particles and initiate the standard thermal history, particularly in models without direct inflaton couplings. The study's significance lies in providing a potential solution to the reheating problem in minimal inflationary models, demonstrating that gravity can play a crucial role in the early universe's evolution.
Reference

“The rapid, oscillatory evolution of the curvature scalar after inflaton acts as a time dependent gravitational pump, creating scalar spectator particles even in the absence of explicit interactions.”

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