Production of scalar particles in expanding spacetime
S. Ng
TL;DR
This paper explores how scalar particles are produced in an expanding universe using quantum field theory, focusing on the excitation of the vacuum state due to cosmic expansion.
Contribution
It provides a detailed analysis of scalar particle creation in an expanding spacetime, emphasizing the role of a time-dependent energy parameter.
Findings
Scalar particles are produced due to universe expansion.
Vacuum state excitation leads to particle creation.
Analysis specific to minimally coupled scalar particles.
Abstract
In this paper, we investigate cosmological particle production using quantum field theory (QFT). We will consider how production of scalar particles can occur in an expanding universe. By introducing a time-dependent energy parameter representing the time evolution of the universe, the initial vacuum state will be excited. Consequently, creation of particles is present. Here, our focus is mainly creation of minimally coupled scalar particles in Minkowski spacetime.
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Taxonomy
TopicsCosmology and Gravitation Theories · Relativity and Gravitational Theory