Foundations of Classical Electrodynamics, Equivalence Principle and Cosmic Interactions: A Short Exposition and an Update

Abstract

We look at the foundations of electromagnetism in this 1st LeCosPA Symposium. For doing this, after some review (constraints on photon mass etc.), we use two approaches. The first one is to formulate a Parametrized Post-Maxwellian (PPM) framework to include QED corrections and a pseudoscalar photon interaction. PPM framework includes lowest corrections to unified electromagnetism-gravity theories based on connection approach. It may also overlap with corrections implemented from generalized uncertainty principle (GUP) when electromagnetism-gravity coupling is considered. We discuss various vacuum birefringence experiments - ongoing and proposed - to measure these parameters. The second approach - the chi-g framework is to look at electromagnetism in gravity and various experiments and observations to determine its empirical foundation. The SME (Standard Model Extension) and SMS (Standard Model Supplement) overlap with the chi-g framework in their photon sector. We found that the foundation is solid with the only exception of a potentially possible pseudoscalar-photon interaction. We discussed its experimental constraints and look forward to more future experiments.

15 pages, 2 figures, 2 tables. Plenary talk at First LeCosPA Symposium: Towards Ultimate Understanding of the Universe(LeCosPA2012), National Taiwan University, Taipei, ROC, February 6-9, 2012

References in corpus (11)

• Test of the Equivalence Principle Using a Rotating Torsion Balance
• Measurement of stimulated Hawking emission in an analogue system
• New PVLAS results and limits on magnetically induced optical rotation and ellipticity in vacuum
• Q & A Experiment to Search for Vacuum Dichroism, Pseudoscalar-Photon Interaction and Millicharged Fermions
• The BMV experiment : a novel apparatus to study the propagation of light in a transverse magnetic field
• Generalized Uncertainty Principle and Self-dual Black Holes
• Axion Search with Q & A Experiment
• Acceleration and vacuum temperature
• A Unified Theory of Non-Linear Electrodynamics and Gravity
• Equivalence principle and electromagnetic field: no birefringence, no dilaton, and no axion
• QED Effective Actions in Space-Dependent Gauge and Electromagnetic Duality

Cited by in corpus (4)

• Dilaton field and cosmic wave propagation
• Rapidly rotating pulsar radiation in vacuum nonlinear electrodynamics
• Anomalous character of the axion-photon coupling in a magnetic field distorted by a pp-wave gravitational background
• Optical cavity resonator in an expanding universe