Swammerdami
Squadron Leader
Perhaps this belongs in The dumb questions thread, but I'm afraid it's too dumb even for that. It starts with the premise that the arrow of time derives from the unexplained singularity called The Big Bang: "Here's a huge amount of negative entropy. Start evolving that-away!" We remember yesterday and anticipate tomorrow not because of some inviolable law of physics, but just because we're enduring a strong gradient of entropy.
In my proposed science fiction epic(*), there is a second Big Bang event in the future, in opposition to the well-known Big Bang 13+ billion years ago. Let's suppose that future Big Bang is similar to ours, but its evolution is in the opposite direction of time — we'll call it the Reverse Big Bang. Like Merlin, creatures on the systems sprung from the future Big Bang remember events in our future and know nothing of our past. Interactions between creatures with our time sense and reverse-time creatures are very hard to imagine, but we'll save this for a different thread.
In the hope of adding a little "scientific credibility" to the epic, I consider equating dark matter to the reverse-stars and reverse-galaxies generated by the reverse-Bang. Some of the dark matter stars might be emitting light just as ferociously as our own Sun, but those photons would travel in reverse time: from our viewpoint the reverse-stars aren't emitting photons, they're absorbing photons. But we can't detect their light absorption; that's why they're dark.
Two flaws present. In this scenario, dark matter is baryonic, but Wikipedia et al insist baryonic dark matter is impossible. However, on inspection the claim that dark matter is non-baryonic seems flimsy. Much of the argumentation centers on the Second Law of Thermodynamics. But that Law doesn't apply to the reverse-galaxies from the reverse-Bang. Or rather, that matter is subject to a reverse-Second Law. From our viewpoint, entropy decreases in the reverse-world. Other arguments that dark matter is not baryonic appeal to Big Bang models — again inapplicable if that matter was created in the reverse-Bang.
The second argument against a reverse-Bang is that the equations of the universe may then be over-constrained, with two boundary conditions imposed instead of one. I have no rebuttal to that, but note that in some interpretations of quantum physics the world is under-constrained, with God called upon to throw dice constantly (to make up for the loss of constraints from the reverse-Bang?), switching quarks, choosing diffraction slits, killing catsand JFK, etc.
(* - Fear not that I will abscond with your good ideas and get rich off this epic. The chance of my ever publishing it is as close to Zero as it can get. If there is huge enthusiasm here, there is a slight chance (still much less than 0.1%) that I will post excerpts.)
In my proposed science fiction epic(*), there is a second Big Bang event in the future, in opposition to the well-known Big Bang 13+ billion years ago. Let's suppose that future Big Bang is similar to ours, but its evolution is in the opposite direction of time — we'll call it the Reverse Big Bang. Like Merlin, creatures on the systems sprung from the future Big Bang remember events in our future and know nothing of our past. Interactions between creatures with our time sense and reverse-time creatures are very hard to imagine, but we'll save this for a different thread.
In the hope of adding a little "scientific credibility" to the epic, I consider equating dark matter to the reverse-stars and reverse-galaxies generated by the reverse-Bang. Some of the dark matter stars might be emitting light just as ferociously as our own Sun, but those photons would travel in reverse time: from our viewpoint the reverse-stars aren't emitting photons, they're absorbing photons. But we can't detect their light absorption; that's why they're dark.
Two flaws present. In this scenario, dark matter is baryonic, but Wikipedia et al insist baryonic dark matter is impossible. However, on inspection the claim that dark matter is non-baryonic seems flimsy. Much of the argumentation centers on the Second Law of Thermodynamics. But that Law doesn't apply to the reverse-galaxies from the reverse-Bang. Or rather, that matter is subject to a reverse-Second Law. From our viewpoint, entropy decreases in the reverse-world. Other arguments that dark matter is not baryonic appeal to Big Bang models — again inapplicable if that matter was created in the reverse-Bang.
The second argument against a reverse-Bang is that the equations of the universe may then be over-constrained, with two boundary conditions imposed instead of one. I have no rebuttal to that, but note that in some interpretations of quantum physics the world is under-constrained, with God called upon to throw dice constantly (to make up for the loss of constraints from the reverse-Bang?), switching quarks, choosing diffraction slits, killing cats
(* - Fear not that I will abscond with your good ideas and get rich off this epic. The chance of my ever publishing it is as close to Zero as it can get. If there is huge enthusiasm here, there is a slight chance (still much less than 0.1%) that I will post excerpts.)
