# Black hole entropy emission property

## TL;DR

This paper investigates the entropy emission characteristics of black holes, revealing that Schwarzschild black holes emit entropy in a one-dimensional manner, but this property does not hold for more complex black holes with multiple parameters.

## Contribution

The study demonstrates that the one-dimensional entropy emission property is specific to Schwarzschild black holes and is violated in black holes with additional parameters.

## Key findings

- Schwarzschild black holes are one-dimensional entropy emitters.
- The one-dimensional emission property is independent of spacetime dimension and spin.
- Multi-parameter black holes do not exhibit one-dimensional entropy emission.

## Abstract

In this work, we examine the entropy emission property of black holes. When the greybody factor is considered, it is found that Schwarzschild black hole is a one-dimensional entropy emitter, which is independent of the spacetime dimension and the spin of the emitted quanta. However, when generalized to other black holes with two or more parameters, the result shows that the one-dimensional entropy emission property will be violated. Thus our result implies that not all black holes behave as one-dimensional entropy emitters.