4 ms·
> In an influential [2008] paper, Noah Linden, Sandu Popescu, Tony Short and Andreas Winter argued that the arrow of time can be explained in terms of quantum m
by lisper 3y ago
> In an influential [2008] paper, Noah Linden, Sandu Popescu, Tony Short and Andreas Winter argued that the arrow of time can be explained in terms of quantum mechanical entanglement. As a physical system becomes entangled with its surroundings, it moves closer to equilibrium — and this one-way evolution determines time’s arrow.
There is an alternative, much simpler way of looking at it that dates back to an overlooked 1996 paper by Nicolas Cerf and Christof Adami: the arrow of time depends on entanglement because that's the only way to get classical correlations (i.e. memories) out of quantum mechanics.
https://blog.rongarret.info/2014/09/are-parallel-universes-real.html https://blog.rongarret.info/2014/09/are-parallel-universes-r...
https://blog.rongarret.info/2014/10/parallel-universes-and-arrow-of-time.html https://blog.rongarret.info/2014/10/parallel-universes-and-a...
You can arrive at the same conclusion relying solely on the theory of decoherence, which can be traced back as early as 1970:
https://ui.adsabs.harvard.edu/abs/1970FoPh....1...69Z https://ui.adsabs.harvard.edu/abs/1970FoPh....1...69Z
- euroderf 3y agoThis is way off-topic, but... I remember reading once the idea that cats can remember the future. But I am unable to re-locate the source of this idea. Can anyone help ?
- novemp 3y agoNo, because it's BS.
- 082349872349872 3y agoclosest I know of is the short story: F Lieber, "Space-Time for Springers" (1958)
- mind-blight 3y agoYou might be thinking about about done cats and dogs can tell an earthquake is coming a minute or two before it hits. That's not as much remembering the future as it likely is having a sense that we don't. But, it can feel like it
- 082349872349872 3y agoInstead of a sense we don't, it's probably just picking up on the P-waves instead of first noticing with the S-waves: https://earthquake.usgs.gov/earthquakes/events/1906calif/18april/earthwaves.php https://earthquake.usgs.gov/earthquakes/events/1906calif/18a...
- sieste 3y agoepisode 53, when jerry dropped the anvil on tom's head.
- MarkusQ 3y ago> I remember reading once the idea that cats can remember the future. Uh, that won't be discovered until 2057. You aren't by any chance a cat, are you?
- deleted 3y ago[deleted]