5 citations · 6 across the 2 of their papers we have counts for
2 papers
gr-qc2023★ 1 cited
Negative frequencies and negative norms in analogue Hawking radiation systems
Raul Aguero-Santacruz, David Bermudez
In this work, we study the core concepts of Hawking radiation in the astrophysical and analogue systems. We focus on the definitions of negative frequencies and negative norms: the…
physics.optics2023★ 5 cited
Negative frequencies in pulse propagation equations and the double analytic signal
Raul Aguero-Santacruz, David Bermudez
In recent years, the topic of negative frequencies has resurfaced in optics motivated by the optical analogue of Hawking radiation. We discuss the physical meaning of negative freq…