Motion-Induced Radiation Due to an Atom in the Presence of a Graphene Plane

CESAR D. FOSCO, FERNANDO C. LOMBARDO AND FRANCISCO D. MAZZIRELLI

Universe

MDPI

Lugar: Basel; Año: 2021 vol. 7 p. 1 - 19

2218-1997

We study the motion-induced radiation due to the non-relativistic motion of an atom,coupled to the vacuum electromagnetic field by an electric dipole term, in the presence of a staticgraphene plate. After computing the probability of emission for an accelerated atom in empty space,we evaluate the corrections due to the presence of the plate. We show that the effect of the plate is toincrease the probability of emission when the atom is near the plate and oscillates along a directionperpendicular to it. On the contrary, for parallel oscillations, there is a suppression. We also evaluatethe quantum friction on an atom moving at constant velocity parallel to the plate. We show that thereis a threshold for quantum friction: friction occurs only when the velocity of the atom is larger thanthe Fermi velocity of the electrons in graphene.