Scientists receive $1.3M to study new propulsion idea for spacecraft

The existence of Unruh radiation is not universally accepted or even detected.

G. W. Ford and R. F. O'Connell (2006) Is there Unruh radiation? Physics Letters A 350 (2006) 17–26. https://pdfs.semanticscholar.org/947a/f319b47bf9eccad97896bc...

>Abstract

>We present an exact analysis of an oscillator (the detector) moving under a constant force with respect to zero-temperature vacuum and coupled to a one-dimensional scalar field. We show that this system does not radiate despite the fact that it thermalizes at the Unruh temperature. We remark upon a differing opinion expressed regarding a system coupled to the electromagnetic field