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Today's New Reason to Believe

New Fine-Structure Constant Measurement Affirms Cosmic Creation

By Hugh Ross - March 1, 2021

A universe like ours requires laws of nature, initial conditions, and fundamental constants. For the fundamental constants, if the values were to change by the slightest number we wouldn’t have structures like atoms, planets, or stars. Scientists repeatedly measure the constants because of such weighty implications. A new measurement has provided affirming evidence for the standard model of particle physics and for creation.

The fine-structure constant is one of the most fundamental constants of physics. It describes the strength of the force of electromagnetism between elementary particles in what is known as the standard model of particle physics. In particular, the fine-structure constant sets the strength of electromagnetic interaction between light (photons) and charged elementary particles such as electrons and muons.

In a recent issue of Nature four physicists report on their experiment in which they measured the value of the fine-structure constant to unprecedented accuracy.1 They determined the value of the inverse of the fine-structure constant to be 137.035999206 ± 0.000000011. Their probable error calculation includes both statistical and systematic errors. Their measurement is 2.5 times more accurate than the previous best determination.2

The researchers achieved their precision measure through a sophisticated experiment. They used "matter-wave interferometry to measure the recoil velocity of a rubidium atom that absorbs a photon."3

Greater Accuracy Affirms Standard Model of Particle Physics
This achievement ranks as yet another triumph for the standard model of particle physics. The team's result establishes beyond any reasonable doubt that the electron is truly an elementary particle. The electron cannot be comprised of smaller particles. If it were, it would have a "different magnetic moment, contrary to observation."4

The team's measurements also establish stronger constraints on the particles that comprise dark matter. Dark matter is comprised of particles that either do not interact with light (photons) or interact with light at a very weak level.

The composition of the universe is 26.25% dark matter.5 The only dark matter particles that have been discovered, however, are the electron, tau, and muon neutrinos. These neutrinos comprise less than 1/5 of the universe's dark matter.

More than 30 different dark matter particles have been proposed to make up the remainder of the universe's dark matter. The physicists' measurement shows that dark-sector particles likely do not exist. The space-time fabric of the universe is filled with a sea of virtual particles. These particles—through quantum fluctuations—briefly pop into existence before returning to the quantum space-time foam. If dark-sector matter particles make up more than a small fraction of virtual particles, they would shift the magnetic moment of the electron in tiny ways that the experimenters would detect. No such shift was seen.

More Evidence for Creation to Come
Several physics research teams, including these four physicists, are gearing up to make much more sensitive measurements of the fine-structure constant. Within two or three years, these teams promise to measure the value of the fine-structure constant with an accuracy of about 10 parts per trillion, a factor eight times superior to the measurement attained by the team of four. At that level of precision, possible effects of the tau lepton (a heavier cousin of the electron) on the fine-structure constant can be probed. Such probing will yield even stronger constraints on dark-sector particles and identify the properties of possibly existing dark-sector particles.

The standard model of particle physics is intimately linked with the standard ΛCDM (Lambda cold dark matter) big bang model. By achieving a superior measurement on the fine-structure constant, these physicists have provided yet more evidence for both the creation of the universe and the creation of fundamental particles. Their work also demonstrates the biblical principle that the more we learn about the realm of nature, the more evidence we uncover for the supernatural handiwork of God.

Featured image: Instrument Used to Measure the Fine-Structure Constant Image credit: Morel et al., Nature 588 (2020): 61–65.


  1. Léo Morel et al., "Determination of the Fine-Structure Constant with an Accuracy of 81 Parts per Trillion," Nature 588, no. 7836 (December 2, 2020): 61–65, doi:10.1038/s41586-020-2964-7.
  2. Richard H. Parker et al., "Measurement of the Fine-Structure Constant as a Test of the Standard Model," Science 360, no. 6385 (April 13, 2018): 191–95, doi:10.1126/science.aap7706.
  3. Morel et al., "Determination of the Fine-Structure Constant," 61.
  4. Holger Müller, "Standard Model of Particle Physics Tested by the Fine-Structure Constant," Nature 588, no. 7836 (December 2, 2020): 37–38, doi:10.1038/d41586-020-03314-0.
  5. Simone Aiola et al., "The Atacama Cosmology Telescope: DR4 Maps and Cosmological Parameters," Journal of Cosmology and Astroparticle Physics vol. 2020, no. 12 (December 2020): id. 047, doi:10.1088/1475-7516/2020/12/047.

  • Particle Physics
  • Big Bang Theory
  • virtual particles
  • tau lepton
  • neutrinos
  • fundamental particle
  • fine-structure constant
  • electron substructure
  • electron
  • dark-sector particles
  • Blogs

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