### Abstract

The possible variation of the fine-structure constant, α, has inspired many people to work on modifications and/or generalizations of the current "standard" theories in which the electromagnetic field is involved. Here we first point out the amazing similarity between Bekenstein's model, describing the variation of a by a varying charge, and the Hojman-Rosenbaum-Ryan-Shepley torsion potential model. This observation invites us to consider a geometric theory of gravity in which a varying a originates from another kind of dynamic quantity of spacetime, i.e., vector torsion. Since the vector torsion field is weak and also not strongly coupled with fermions it is difficult to detect it directly. The detection of a time-varying α could thus provide some promising evidence for the existence of torsion.

Original language | English |
---|---|

Pages (from-to) | 383-388 |

Number of pages | 6 |

Journal | Annales de la Fondation Louis de Broglie |

Volume | 32 |

Issue number | 2-3 |

Publication status | Published - 2007 |

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### All Science Journal Classification (ASJC) codes

- Chemical Engineering(all)

### Cite this

*Annales de la Fondation Louis de Broglie*,

*32*(2-3), 383-388.

}

*Annales de la Fondation Louis de Broglie*, vol. 32, no. 2-3, pp. 383-388.

**The fine-structure constant and the torsion potential.** / Yo, Hwei-Jang.

Research output: Contribution to journal › Article

TY - JOUR

T1 - The fine-structure constant and the torsion potential

AU - Yo, Hwei-Jang

PY - 2007

Y1 - 2007

N2 - The possible variation of the fine-structure constant, α, has inspired many people to work on modifications and/or generalizations of the current "standard" theories in which the electromagnetic field is involved. Here we first point out the amazing similarity between Bekenstein's model, describing the variation of a by a varying charge, and the Hojman-Rosenbaum-Ryan-Shepley torsion potential model. This observation invites us to consider a geometric theory of gravity in which a varying a originates from another kind of dynamic quantity of spacetime, i.e., vector torsion. Since the vector torsion field is weak and also not strongly coupled with fermions it is difficult to detect it directly. The detection of a time-varying α could thus provide some promising evidence for the existence of torsion.

AB - The possible variation of the fine-structure constant, α, has inspired many people to work on modifications and/or generalizations of the current "standard" theories in which the electromagnetic field is involved. Here we first point out the amazing similarity between Bekenstein's model, describing the variation of a by a varying charge, and the Hojman-Rosenbaum-Ryan-Shepley torsion potential model. This observation invites us to consider a geometric theory of gravity in which a varying a originates from another kind of dynamic quantity of spacetime, i.e., vector torsion. Since the vector torsion field is weak and also not strongly coupled with fermions it is difficult to detect it directly. The detection of a time-varying α could thus provide some promising evidence for the existence of torsion.

UR - http://www.scopus.com/inward/record.url?scp=49249125609&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49249125609&partnerID=8YFLogxK

M3 - Article

VL - 32

SP - 383

EP - 388

JO - Annales de la Fondation Louis de Broglie

JF - Annales de la Fondation Louis de Broglie

SN - 0182-4295

IS - 2-3

ER -