Pre-Big Bang, vacuum and noncyclic cosmologies
Luis Gonzalez-Mestres

TL;DR
This paper explores noncyclic pre-Big Bang cosmologies, proposing a spinorial space-time framework that naturally explains universe expansion without relying on standard matter or relativity, and discusses implications for fundamental physics.
Contribution
It introduces a spinorial space-time model with two complex coordinates, offering a geometric explanation for universe expansion and addressing primordial questions like the origin of half-integer spins.
Findings
A spinorial space-time leads to a naturally expanding universe.
The model predicts a velocity-distance ratio matching the universe's age.
It provides a geometric basis for cosmological expansion without standard matter.
Abstract
WMAP and Planck open the way to unprecedented Big Bang phenomenology, potentially allowing to test the standard Big Bang model as well as less conventional approaches including noncyclic pre-Big Bang cosmologies that would incorporate a new fundamental scale beyond the Planck scale and, possibly, new ultimate constituents of matter. Alternatives to standard physics can be considered from a cosmological point of view concerning vacuum structure, the nature of space-time, the origin and evolution of our Universe, the validity of quantum field theory and conventional symmetries, solutions to the cosmological constant problem, inflationary scenarios, dark matter and dark energy, the interpretation of string-like theories... Lorentz-like symmetries for the properties of matter (standard or superbradyonic) can then be naturally stable space-time configurations resulting from general…
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