High School Do Open Timelike Curves Exist?

  • Thread starter Thread starter TheQuestionGuy14
  • Start date Start date
  • Tags Tags
    Curves
Click For Summary
Closed Timelike Curves (CTCs) are theoretical constructs in general relativity that do not violate causality, but their existence remains unproven and purely speculative. Despite inquiries about their nature and potential sources for further reading, no empirical evidence has been found to support their existence. The discussion emphasizes that questions regarding the reality of CTCs are unwelcome, as they have no known relevance to observable phenomena. Participants are encouraged to focus on theoretical literature instead. Ultimately, the consensus is that CTCs are interesting but remain unobserved and hypothetical.
TheQuestionGuy14
Messages
158
Reaction score
8
These are apparently Closed Timelike Curves that don't violate causality, do they exist?
 
Physics news on Phys.org
Can you describe what they are better? Or provide a source that discusses them? I've never heard of this terminology.
 
Matterwave said:
Can you describe what they are better? Or provide a source that discusses them? I've never heard of this terminology.
https://arxiv.org/abs/1206.5485
Only big thing I could find on them.
 
TheQuestionGuy14 said:
These are apparently Closed Timelike Curves that don't violate causality, do they exist?
None have been observed.
 
I see these threads from QuestionGuy over and over and over and wonder if I am in a closed timelike curve!
 
  • Like
Likes Sorcerer, phinds, weirdoguy and 2 others
Vanadium 50 said:
I see these threads from QuestionGuy over and over and over and wonder if I am in a closed timelike curve!
@TheQuestionGuy14 V50 is right, this is quite tiresome. If you have questions about the theoretical literature on closed timelike curves then you are welcome to post them here. There is a body of literature on the theory of CTC solutions to GR.

However please stop asking any questions related to their existence. No such curves have been observed, they are purely theoretical. They have no known bearing on reality.

Further posts on CTC existence or reality will be summarily deleted. Thread closed
 
Last edited:
  • Like
Likes weirdoguy

Thread 'EPR revisited'

In an inertial frame of reference (IFR), there are two fixed points, A and B, which share an entangled state $$ \frac{1}{\sqrt{2}}(|0>_A|1>_B+|1>_A|0>_B) $$ At point A, a measurement is made. The state then collapses to $$ |a>_A|b>_B, \{a,b\}=\{0,1\} $$ We assume that A has the state ##|a>_A## and B has ##|b>_B## simultaneously, i.e., when their synchronized clocks both read time T However, in other inertial frames, due to the relativity of simultaneity, the moment when B has ##|b>_B##...
View full post »

Similar threads

Undergrad CTC on FLRW cosmological models
  • · Replies 6 ·
Replies
6
Views
1K
Graduate Timelike curves on event horizon
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Okay, what exactly makes a timelike curve closed?
  • · Replies 18 ·
Replies
18
Views
3K
High School Closed Timelike Curves vs Time Loops: What's the Difference?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Do existing EFE solutions support Closed Timelike Curves?
  • · Replies 7 ·
Replies
7
Views
737
Undergrad Is this a closed spacelike curve?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad What Makes Closed Timelike Curves Physically Possible in Godel Universes?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Velocity of Timelike Curve in Special Relativity
  • · Replies 3 ·
Replies
3
Views
2K
Condition for close timelike curve?
  • · Replies 17 ·
Replies
17
Views
3K
High School Are Geometries that contain Closed Timelike Curves Possible?
  • · Replies 28 ·
Replies
28
Views
3K