Dirac Current in Expanding Spacetime
N.G.Sarkar, S.Biswas, A.Shaw
TL;DR
This paper investigates how Dirac current behaves in expanding spacetimes, focusing on particle-antiparticle dynamics and quantum vacuum evolution, which are crucial for understanding particle production in cosmological models.
Contribution
It introduces a detailed analysis of Dirac current behavior in Schrödinger and de Sitter expanding universes, highlighting new insights into quantum vacuum evolution and particle creation mechanisms.
Findings
Dirac current exhibits specific rotation patterns in expanding spacetime.
Quantum vacuum evolution leads to particle production.
Particle-antiparticle dynamics are influenced by the spacetime expansion.
Abstract
We study the behaviour of Dirac current in expanding spacetime with Schr{\"o}dinger and de Sitter form for the evolution of the scale-factor. The study is made to understand the particle-antiparticle rotation and the evolution of quantum vacuum leading to particle production in such spacetime.
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Taxonomy
TopicsQuantum Electrodynamics and Casimir Effect · Cosmology and Gravitation Theories · Black Holes and Theoretical Physics