Viscosity and diffusion in life processes and tuning of fundamental constants
Open accessAbstract
Viewed as one of the grandest questions in modern science, understanding fundamental physical constants has been discussed in high-energy particle physics, astronomy and cosmology. Here, I review how condensed matter and liquid physics gives new insights into fundamental constants and their tuning. This is based on two observations: first, cellular life and the existence of observers depend on viscosity and diffusion. Second, the lower bound on viscosity and upper bound on diffusion are set by fundamental constants, and I briefly review this result and related recent developments in liquid physics. I will subsequently show that bounds on viscosity, diffusion and the newly introduced fundamental velocity gradient in a biochemical machine can all be varied while keeping the fine-structure constant and the proton-to-electron mass ratio intact. This implies that it is possible to produce heavy elements in stars but have a viscous planet where all liquids have very high viscosity (for example that of tar or higher) and where life may not exist. Knowing the range of bio-friendly viscosity and diffusion, we will be able to calculate the range of fundamental constants which favour cellular life and observers and compare this tuning with that discussed in high-energy physics previously. This invites an inter-disciplinary research between condensed matter physics and life sciences, and I formulate several questions that life science can address. I finish with a conjecture of multiple tuning and an evolutionary mechanism.
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Trachenko (2023) investigated the effects of a variation of the constants on condensed matter and liquid physics, focusing on viscosity and diffusion in order to translate the range of bio-friendly viscosity and diffusion on the range of fundamental constants which favor cellular life.
“Trachenko (2023) investigated the effects of a variation of the constants on condensed matter and liquid physics, focusing on viscosity and diffusion in order to translate the range of bio-friendly viscosity and diffusion on the range of fundamental constants which favor cellular life.”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Trachenko (2023)
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- Authors
- Trachenko, K.
- Affiliations
- Queen Mary University of London (GB)
- Corresponding author
- Trachenko, K
- ORCID
- Trachenko, K
- Venue
- Reports on Progress in Physics
- Publisher
- IOP Publishing
- Published
- 2023-10-09
- Volume
- 86
- Issue
- 11
- Pages
- 112601
- ISSN
- 0034-4885 (ISSN-L)
- 1361-6633
- OpenAlex
- W4387439469
- Cited by
- 14
- References
- 91
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 4
- FWCI
- 0.41
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- Reports on Progress in Physics (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Mathematical Theories and Applications
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
- Keywords
- fundamental physical constants, fine-structure constant, proton-electron mass ratio, viscosity, diffusion, cellular life, heavy element nucleosynthesis
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