Did Google quantum computer change the arrow of time?

The latest FB news is that Google quantum computer as changed the arrow of time for a period of about 1 second. There is no publication of this yet but IBM made a similar announcement in 2019 (see this). It remains unclear to me what they have achieved without knowing what they mean with the time reversal.

1. Time reversal can be interpreted as a time reflection, which is a slightly broken discrete symmetry in fundamental physics. Do they construct a time revered time evolution in which initial and final states are permuted? Since complex conjugation is associated with the time reversal, a positive Hamiltonian can induce the time-reversed time evolution and no new physics would be involved.
2. Time reversal can be also interpreted as a thermodynamical time reversal. The reversal of the thermodynamical arrow of time is thought to be impossible in standard thermodynamics. There are however anomalies suggesting that this is possible. Phase conjugate laser rays are a basic example. In biology Pollack effect suggests the reversal of the arrow of time in the negatively charged exclusion zone. The inpurities are cleaned out of the system whereas thermodynamics suggests the reversal. Dissipation with a reversed arrow of time.
3. In TGD, time reversal occurs in “big” state function reductions (BSFRs) occurring in quantum measurement and induce a thermodynamical time reversal. In “small” SFRs (SSFRs), which have interpretation as internal quantum measurements of the system involving no external observer and assumed to give rise to cognition and consciousness, this does not happen. These measurements would take place in the discrete degrees of freedom predicted to be associated with the non-determism, of the classical dynamics. The sequence of SSFRs defines a conscious entity self, which would die and reincarnate with an opposite arrow of time in BSFR. Falling asleep or biological death would be familiar examples of this.

By writing “Google’s quantum computer reversed the arrow of time” to Google, one learns more. AI claims that the thermodynamic arrow was not really changed. A quantum computational feat would be in question. But what does it really mean? The computer is externally controlled and the time evolution A→B is continued so that one has A→B→A. This means that a quantum measurement by an external system takes place at time T when the B→A starts.

In the TGD framework this would mean that the control inducing what looks B→A corresponds to a BSFR at time T, which reverses the arrow of geometric time. A time evolution to the geometric past by SSFRs begins at time T-ΔT₁ and eventually at time T-ΔT₂ a second BSFR occurs and the evolution with the standard arrow of time time by SSFRs begins, not at T but, at T+ΔT. ΔT would be about 1 second. The same happens as we fall asleep: we wake-up after, say, ΔT=12 hours but make a time travel to the geometric past during sleep lasting for say, 12 hours.

If this interpretation is correct, the experiment would provide a direct support for the zero energy ontology of TGD, which solves the basic problem associated with quantum measurement theory.

See the articles Some comments related to Zero Energy Ontology (ZEO) and Is Negentropy Maximization Principle needed as an independent principle?

For a summary of earlier postings see Latest progress in TGD.

For the lists of articles (most of them published in journals founded by Huping Hu) and books about TGD see this.