What is self-creation cosmology (SCC)?
From the wiki on SCC here]
Self-creation cosmology (SCC) theories are gravitational theories in which the mass of the universe is created out of its self-contained gravitational and scalar fields, as opposed to the theory of continuous creation cosmology or the steady state theory which depend on an extra 'creation' field.Overview:
In the new Self-Creation Cosmology theory (henceforth referred to as just SCC) the modification of the Brans Dicke theory, which allows the creation of matter and energy, is constrained by the principle of the local conservation of energy. This has the effect that rest masses vary whereas the observed Newtonian Gravitation ’constant’ does not. Furthermore, there is a conformal equivalence between SCC and General Relativity in vacuo, which results in the predictions of the two theories being equal in the standard tests.Significant feature of SCC:
Unlike the standard model, however, it does not require the addition of the undiscovered physics of Inflation, dark non-baryonic matter, or unknown dark energy. On the other hand it does demand an exotic equation of state, which requires the presence of false vacuum energy at a moderate density that is determined by the field equations. As a result of this link between the false vacuum and space-time curvature the theory is able to interface gravitation and quantum theories without creating a ’Lambda’ problem. There is a problem fitting the distant Type Ia supernovae data as this theory requires them not to be standard candles over cosmological history but intrinsically fainter in the past.Bold added by me. "Big Bang" with no inflation?
In the former frame the universe is stationary and eternal with exponentially shrinking rulers and accelerating atomic clocks, while in the latter, and more familiar, frame the universe is 'freely coasting', and expands linearly from a Big Bang with rigid rulers and regular atomic clocks. Such a strictly linearly expanding universe does not require Inflation to resolve the horizon problem, or the smoothness and flatness problems that exist in GR as they do not arise in the first place.Bold added by me. The new (2002) theory:
An alternative to the principle of the conservation of energy–momentum is required, in order to constrain mass creation. In the new SCC theory it is postulated that mass is created out of gravitational and scalar fields in accordance with the Principle of Mutual Interaction (PMI). The PMI states that: "The scalar field is a source for the matter-energy field if and only if the matter-energy field is a source for the scalar field."Philosophical problems associated with a singularity and "an origin" disappear:
In the Jordan conformal frame the cosmological solution is closed, static (but dynamically evolving), eternal and singularity free. In this frame rulers 'shrink' (relative to the peak wavelength of the CMB) and atomic clocks 'speed up' (relative to time measured by the peak frequency of the CMB) as their atoms exponentially gain mass with cosmological time . Philosophical problems associated with 'an origin' thus disappear.Bold added by me. Clock drift:
Finally, SCC predicts a cosmological 'clock drift' between atomic clock time and ephemeris time. Consequentially, in some methods of measurement distant spacecraft should appear to suffer a sunwards acceleration equal to cH, as indeed seems to be observed in the Pioneer anomaly.Is SCC the ultimate cosmology theory?