Jump to content


baw1064

Member Since 14 January 2012 - 05:28 PM
Offline Last Active Jun 02 2020 12:01 AM
-----

Topics I've Started

CPT symmetric universe?

29 March 2020 - 03:48 AM

So this really weird idea popped into my head after sitting in my house for a few weeks.

It turns out the laws of physics (specifically, the weak nuclear force) are subtly different for matter and antimatter (Charge reversal), which has been postulated as the reason we only have matter in our universe unless we make antimatter ourselves or briefly in radioactive decays. Also things are different if you invert all spatial dimensions (Parity reversal), or run time backwards (T reversal). Likewise if you invert any two of C, P, and T, the laws of physics also change slightly. But inverting all three leaves everything the same as far as we know--if it doesn't, a whole lot of our understanding is wrong! This principal is called CPT invariance.

My weird Idea was if there could be a parallel (or more precisely, antiparallel) universe made up of antimatter, running backward in time from the Big Bang, with the three spatial dimensions also inverted. It wouldn't really be "before" the Big Bang, although it seems like it from our perspective--the reason being that to the best of our knowledge time can't exist independently of space. Rather, from the Big Bang matter mostly headed in one direction in time and antimatter mostly in the other. Our hypothetical counterparts in the anti-universe would see things much the same as we do (entropy increasing)--their perspective of time would just look backward to us. Not that we could ever meet them, since we'd have to go back in time, through the Big Bang singularity, and then would be quickly annihilated by all the antimatter in the parallel universe.

So it turns out someone had the same weird idea a few years ago. The authors claim it provides a possible explanation for dark matter (I'll have to think about that some more).

https://www.research...metric_universe

Here's the paper:

Amazon, Microsoft, Trump, and JEDI

09 December 2019 - 09:09 PM

So Amazon Web Services (AWS) has officially protested the Pentagon's award of a major cloud contract to Microsoft, in which Trump's repeated public and private statements to "screw Amazon" were in all probability, a factor.

https://federalnewsn...-jedi-contract/

So in all honesty, I don't know which proposal was better. But having been a fed for almost 20 years, I can tell you that the appearance of impropriety is oftentimes nearly as bad as the real thing. And there's no friggin' way anybody can claim* that Trump's behavior doesn't give the appearance of impropriety.

*The Devin Nunes exception is noted.

Racially and ethnically motivated terrorism rose alarmingly in 2018: U.S. State Department

01 November 2019 - 08:56 PM

Ethnically and racially driven terrorism rose alarmingly in 2018 both worldwide and in the United States, and groups have often mimicked the tactics of armed Islamist militants to radicalize and recruit people, the U.S. State Department said on Friday.

https://www.reuters....t-idUSKBN1XB4QY

Shepard Smith leaving Fox News

11 October 2019 - 04:36 PM

I guess it got lonely being the token person aware of reality there.

https://thehill.com/...eaving-fox-news

NC-9 Special ("Redo") election

14 August 2019 - 08:29 PM

Remember all the shenanigans involving absentee ballots in the North Carolina 9th district last year?

Well, they're having the special election that resulted from all this fallout in about 3 weeks (Sept. 10).

https://en.wikipedia...pecial_election

Not a lot of polling is available, but one story on The Hill indicated a very competitive race.