Vacuum Incalescence

TL;DR

This paper explores how an atom moving near a surface experiences a modified electromagnetic vacuum, effectively behaving as if in a thermal field, revealing new insights into quantum vacuum properties and non-equilibrium effects.

Contribution

It demonstrates that an atom's motion near a surface induces a thermal-like interaction with the vacuum, linking velocity, distance, and vacuum properties in a novel way.

Findings

Motion induces an effective temperature in the electromagnetic vacuum.

Interaction with the vacuum can be modeled as thermal at certain conditions.

Results open pathways for experimental studies of quantum vacuum effects.

Abstract

In quantum theory the vacuum is defined as a state of minimum energy that is devoid of particles but still not completely empty. It is perhaps more surprising that its definition depends on the geometry of the system and on the trajectory of an observer through space-time. Along these lines we investigate the case of an atom flying at constant velocity near a planar surface. Using general concepts of statistical mechanics it is shown that the motion-modified interaction with the electromagnetic vacuum is formally equivalent to the interaction with a thermal field having an effective temperature determined by the atom's velocity and distance from the surface. This result suggests new ways to experimentally investigate the properties of the quantum vacuum in non-equilibrium systems and effects such as quantum friction.