TITLE:
Electrical Noise, Brownian Motion and the Arrow of Time
AUTHORS:
Jose-Ignacio Izpura
KEYWORDS:
Electrical Noise, Fluctuation-Dissipation, Cause-Effect, Complex Admittance, The Arrow of Time
JOURNAL NAME:
Journal of Modern Physics,
Vol.6 No.2,
February
25,
2015
ABSTRACT: The origin of the Johnson noise of resistors is reviewed by a new model
fitting in the Fluctuation-Dissipation framework and compared with the velocity
noise in Brownian motion. This new model handling both fluctuations as well as
dissipations of electrical energy in the Complex Admittance of any resistor
excels current model based on the dissipation in their conductance. From the
two orthogonal currents associated to a sinusoidal voltage in an electrical admittance,
the new model that also considers the discreteness of the electrical charge
shows a Cause-Effect dynamics for electrical noise. After a brief look at
systems considered as energy-conserving and deterministic on the microscale
that are dissipative and unpredictable on the macroscale, the arrow of time is
discussed from the noise viewpoint.