Solitonic black holes induced by magnetic solitons in a dc-SQUID array transmission line coupled with a magnetic chain

Haruna Katayama; Satoshi Ishizaka; Noriyuki Hatakenaka; Toshiyuki Fujii

doi:10.1103/PhysRevD.103.066025

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Solitonic black holes induced by magnetic solitons in a dc-SQUID array transmission line coupled with a magnetic chain

Haruna Katayama, Satoshi Ishizaka, Noriyuki Hatakenaka, Toshiyuki Fujii

DOI 10.1103/PhysRevD.103.066025 · Physical Review D

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Abstract

We investigate analog black holes generated in an array of direct current superconducting quantum interference devices (dc SQUIDs) coupled in parallel with a one-dimensional chain of single-domain nanomagnets. Magnetic solitons in the chain provide magnetic fields perpendicular to the SQUID array. This leads to the spatially varying velocities of electromagnetic waves through the nonlinear inductance in the array required for creating effective event horizons, resulting in analog black holes. We derive the Hawking temperature in this analog black hole based on the tunneling mechanism for Hawking radiation. The formula reflecting the soliton properties shows that Hawking radiation is observable using the current state-of-the-art technologies.