Greybody Factors for Scalar Fields emitted by a Higher-Dimensional Schwarzschild-de-Sitter Black-Hole

Understand

In this work, we consider the propagation of scalar particles in a higher-dimensional Schwarzschild-de-Sitter black-hole spacetime, both on the brane and in the bulk.

• Our analysis applies for arbitrary partial modes and for both minimal and non-minimal coupling of the scalar field.
• A general expression for the greybody factor is analytically derived in each case, and its low-energy behaviour is studied in detail.
• Its profile in terms of scalar properties (angular-momentum number and non-minimal coupling parameter) and spacetime properties (number of extra dimensions and cosmological constant) is thoroughly investigated.