Received: 18 September 2016 / Revised: 20 November 2016 / Accepted: 28 November 2016 / Published: 2 December 2016

Cited by 1 | PDF Full-text (304 KB) | HTML Full-text | XML Full-text
**Abstract**

We use the Dirac equation in a fixed black hole background and different independent techniques to demonstrate the absence of fermionic bound states around a Schwarzschild black hole. In particular, we show that no embedded eigenvalues exist which has been claimed for the

[...] Read more.
We use the Dirac equation in a fixed black hole background and different independent techniques to demonstrate the absence of fermionic bound states around a Schwarzschild black hole. In particular, we show that no embedded eigenvalues exist which has been claimed for the case when the energy is less than the particle’s mass. We explicitly prove that the claims regarding the embedded eigenvalues can be traced back to an oversimplified approximation in the calculation. We conclude that no bound states exist regardless of the value of the mass.
Full article

(This article belongs to the collection Open Questions in Black Hole Physics)