Time varying $\alpha$ in N=8 extended Supergravity

Abstract

There has been some evidence that the fine structure "constant" $\alpha$ may vary with time. We point out that this variation can be described by a scalar field in some supergravity theory in our toy model, for instance, the N=8 extended supergravity in four dimensions which can be accommodated in M-theory.

5 pages,1 figures. Accepted for publication in JHEP

References in corpus (5)

• Supergravity, Dark Energy and the Fate of the Universe
• Fine-structure constant variability, equivalence principle and cosmology
• M-theory, Cosmological Constant and Anthropic Principle
• Dark Energy and the Fate of the Universe
• Varying Fine-Structure Constant and the Cosmological Constant Problem

Cited by in corpus (4)

• Local and Global Variations of The Fine Structure Constant
• Time Variation of the Fine Structure Constant Driven by Quintessence
• Spatial Variation of the Fine-Structure Parameter and the Cosmic Microwave Background
• Cosmological evolution of Alpha driven by a general coupling with Quintessence