Greybody factors of string-corrected d-dimensional black holes

TL;DR

This paper analytically calculates greybody factors for higher-dimensional black holes with string-inspired corrections, covering high frequency and highly damped regimes, for gravitons and scalar fields, providing detailed scattering coefficients.

Contribution

It provides the first analytical computation of greybody factors for string-corrected d-dimensional black holes in both eikonal and highly damped limits.

Findings

Derived full transmission and reflection coefficients.

Analyzed emission spectra for gravitons and scalar fields.

Extended understanding of black hole radiation with string corrections.

Abstract

We compute analytically greybody factors for asymptotically flat spherically symmetric black holes with stringy higher derivative corrections in d dimensions in the high frequency limit. Our calculations include both the eikonal limit - where the real part of the frequency of the scattered wave is much larger than the imaginary part - and the highly damped case - where the imaginary part of the frequency is much larger than the real part -, addressing the emission of gravitons and test scalar fields, and yielding full transmission and reflection scattering coefficients.