Dipole-dipole interaction in random electromagnetic fields

TL;DR

This paper reveals a novel long-range dipole-dipole interaction force in random electromagnetic fields, enabling optical binding between particles even in incoherent light, with unique features discussed.

Contribution

It introduces the existence of a non-zero interaction force between dipoles in random fields, a new phenomenon in optical physics.

Findings

Long-range dipole-dipole interaction exists in random electromagnetic fields.

Optical binding can occur in spatially incoherent fields.

Unique features of this interaction are discussed.

Abstract

We demonstrate that a non-vanishing interaction force exists between pairs of induced dipoles in random, statistically stationary electromagnetic field. This new type of optical binding force leads to long-range interaction between dipolar particles even when placed in spatially incoherent fields. We also discuss several unique features of dipole-dipole interaction in spatially incoherent Gaussian fields.