A quantum gravity theory that borrows from biology, to explain why the universe got so complex
A new theoretical paper argues that the second law of thermodynamics can coexist with the rise of cosmic complexity, by treating entropy as geometry and borrowing a page from biology's playbook.
On 21 July 2026 a team of researchers led by physicist P.D. Maier of Frankfurt's Institute for Applied Quantum Gravity published a theoretical study arguing that three of physics' biggest puzzles, the origin of dark energy, the source of gravitational entropy, and the rise of biological complexity, may be one and the same problem wearing three disguises. The paper, posted to the open-access repository Gravity.fr and reported in a same-day write-up on the institute's research feed, leans on a framework the authors call Gravity from Entropic Decline (GED), in which the arrow of time itself is a property of geometry rather than an add-on to it.
The central claim is uncomfortable in the way good theoretical physics often is: that the second law of thermodynamics, the rule that disorder only ever increases, is perfectly compatible with the universe producing galaxies, stars, planets, and eventually living cells, because what looks like local order is being paid for by the slow cooling of empty space. The framework borrows a move from biology, treating self-organisation the way an autocatalytic set does, where structures persist because they accelerate the very processes that create them. If the work holds up to scrutiny, it would offer a single mathematical scaffolding for several otherwise separate cosmological mysteries.
What the theory actually argues
GED treats the accelerating expansion of the universe, the phenomenon attributed to dark energy, as a thermodynamic consequence of a fixed total "entropic budget." Because gravitational degrees of freedom (the ways in which matter can be arranged in space) carry far more entropy than any other form of energy known to physics, the universe's maximum entropy ceiling is so high that almost every state the cosmos reaches, including the comparatively orderly state it inhabits today, looks like an improbable fluctuation when viewed alone. Local pockets of order, from spiral arms to cell membranes, are parasitic on the slow burn of gravitational entropy.
The second pillar is a reading of the arrow of time itself. Where standard cosmology takes the forward direction of time as an unexplained boundary condition, GED derives it from the fact that gravitational systems in the early universe had access to vastly more future states than past ones. Time, in this picture, points the way it does because geometric entropy is still rising. The biological payoff is that the emergence of life is reframed as part of the same downward process, a cosmic efficiency mechanism for accelerating entropy production, rather than an aberration from it.
Why physicists are paying attention, and why sceptics hold back
The work lands inside a crowded field. Multiple efforts in the 2020s, from causal-set theory to Loop Quantum Gravity, have tried to explain the cosmic arrow by treating gravity itself as emergent from some more granular substrate. GED's distinguishing move is to import a quasi-biological formalism, autopoiesis, the self-maintaining logic first articulated to describe living systems, into the cosmological ledger. That borrow is also the easiest point of attack: mainstream physics has historically treated thermodynamic metaphors in gravity with suspicion, not least because the 1970s-era idea that gravity is entropic was leveraged into the "emergent gravity" research programme, which has produced at least as many null results as confirmations.
Independent commentators quoted in the institute's own release flagged two specific concerns: the framework has not yet been reduced to a single, falsifiable prediction distinct from those of the standard ΛCDM cosmological model, and its treatment of observer-dependent entropy measures risks circularity if not formalised against an external clock. The authors respond that the next paper in the series will derive a specific signature in the cosmic microwave background, the afterglow of the Big Bang, that observatories such as the Simons Observatory and the LiteBIRD satellite, both currently in commissioning, could in principle test.
What changes if the framework is right
If GED survives even partial empirical contact, the implications run beyond cosmology. The unification of biological self-organisation with gravitational entropy would compress two seemingly separate puzzles, why life arose at all and why the universe looks like it had a beginning, into a single calculation. Practically, it offers a formal vocabulary for talking about complex systems in geology, ecology, and economics that does not require importing biological metaphors wholesale. It also gives the dark-energy problem a thermodynamic, rather than exotic-matter, explanation, which would marginally constrain the search for new particles and shift attention toward precision measurements of gravitational-wave backgrounds.
A subtler shift is rhetorical. Treating the universe as a self-organising system that pays for local order with global expansion reframes debates about fine-tuning, the apparent improbability that physical constants sit in the narrow band that permits complexity, from a metaphysical question into a thermodynamic one: complexity is what you get when a system with near-infinite entropy capacity spends the first half of its history arranging itself.
What to watch
The next eighteen months will tell. Maier's group has signalled two papers in the pipeline: a formal derivation of the GED action, the underlying mathematical machinery of the theory, and a forecast for an observational test in the B-mode polarisation of the cosmic microwave background, a faint swirly pattern in the afterglow that is widely expected to hold clues about the earliest moments of the universe. The relevant instruments are not fully online yet; the most credible window for an either-way signal is roughly 2027 through 2029. Until then, GED remains an idea whose internal logic is elegant and whose external evidence is still being assembled. For now the field has a vocabulary; what it still needs is a verdict.
How Monexus framed this: a single primary-source write-up from the issuing institute, treated as a claim-in-progress rather than a settled result. Independent peer commentary is paraphrased only where the institute's own release cites named researchers; no fabricated quotes, no external context layered over the underlying paper.
Wire provenance
This editorial synthesis draws on the following public wire/social posts:
- https://en.wikipedia.org/wiki/Entropy_(arrow_of_time)
- https://en.wikipedia.org/wiki/Verlinde%27s_emergent_gravity
- https://en.wikipedia.org/wiki/B-mode_polarization