TITLE:
A Deeper Analogy between Electromagnetism and Acoustics
AUTHORS:
Qiankai Yao
KEYWORDS:
Electromagnetic-Acoustic Analogy, Acoustic Interaction, Cosmological Acoustic Wave
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.1,
January
13,
2016
ABSTRACT: Based on an assumption of that the cosmological constant term in Einstein
field equation can be modeled as a material medium, we propose the concept of
cosmological acoustic wave (CAW). In the process, we will see: 1) By the dual framework
of electromagnetic theory, it is possible to consider some implications of CAW,
such as, the acoustic charge quantization, the unit spin of phonon, the
mechanical meaning of acoustic current and the acoustic radiation. It shows
that, besides the transverse and longitudinal waves, there should be a sort of adjoint
waves without contribution to energy flows. 2) The electromagnetic-acoustic
equations are applied in homogeneous and isotropic material media, which can
help us to describe uniformly the electromagnetic-acoustic phenomena. 3) It
will be verified that, the acoustic interaction is identical to the
gravitational one in classical physics. This decision suggests the so-called
gravitational wave could be indeed understood as an acoustic radiation in
cosmological space.