Particle decay in de Sitter spacetime via quantum tunneling

TL;DR

This paper investigates the quantum tunneling decay of particles in de Sitter spacetime, revealing a thermal radiation process with an effective temperature twice the Hawking temperature.

Contribution

It introduces a novel analysis of particle decay via tunneling in de Sitter space, highlighting an enhanced effective temperature compared to traditional Hawking radiation.

Findings

Decay process resembles thermal radiation

Effective temperature is twice the Hawking temperature

Provides new insights into particle decay in cosmological horizons

Abstract

The quantum tunneling process of decay of the composite particle in the de Sitter vacuum looks as thermal radiation with the effective temperature twice larger than the Hawking temperature associated with the cosmological horizon.