What is status of String Theory now?

In summary, there are recent developments and progress in String Theory, which is a set of different theories that make sense mathematically. However, there is no evidence to support its validity and experimental testing is currently impossible due to extreme conditions required. Some interesting connections have been found between quantum information theory and gravity, suggesting that spacetime geometry is related to the entanglement structure of underlying quantum systems. There is also a potential relationship between the final theory and Godel's incompleteness theorem, with some scientists, like Stephen Hawking, questioning the existence of a final theory altogether.
  • #1
Viet Tu
8
0
Are there anything new in String theory?
 
Physics news on Phys.org
  • #2
Viet Tu said:
Are there anything new in String theory?

Welcome to the PF. :smile:

Yes. Scientists are hard at work on String Theory.

http://www.catster.com/wp-content/uploads/2015/06/cat_with_string.jpg
cat_with_string.jpg

For more information, do a Google search and post links in the General Physics forum with your specific questions about String Theory. Or, post in the General Discussion forum in the Kitten thread, whichever is most applicable... :smile:

<< Mentor Note -- thread moved to the general technical physics forums >>
 
Last edited:
  • Like
Likes Nugatory, atyy, hsdrop and 1 other person
  • #3
Thank you.
Apologize for my mistake.
 
  • #4
May we all look at the universe the same way a kitten looks at a ball of string.
With wide eyed wonder, amazement, curiosity and, just a touch of psychotic playfulness.
 
  • #5
There still is not any evidence that what is proposed by string theory is true, so no change there.
String theory though is a actualy a set of diffrrent theories, which make very good sense mathematically, but it ends there.
There is 'M' theory which attempts to unite the various string models, which is nice, but still, so what?, unless something is predicated and found to be true.
 
  • Like
Likes Viet Tu
  • #6
rootone said:
There still is not any evidence that what is proposed by string theory is true, so no change there.
String theory though is a actualy a set of diffrrent theories, which make very good sense mathematically, but it ends there.
There is 'M' theory which attempts to unite the various string models, which is nice, but still, so what?, unless something is predicated and found to be true.
No experiments have been done yet, to test it, because they would require such extreme and unattainable (as yet) conditions.
 
  • #7
Yes, there is progress in string theory. Many of the most interesting developments are summarized in these lectures by Mark Van Raamsdonk.

https://arxiv.org/abs/1609.00026
Lectures on Gravity and Entanglement
Mark Van Raamsdonk
(Submitted on 31 Aug 2016)
The AdS/CFT correspondence provides quantum theories of gravity in which spacetime and gravitational physics emerge from ordinary non-gravitational quantum systems with many degrees of freedom. Recent work in this context has uncovered fascinating connections between quantum information theory and quantum gravity, suggesting that spacetime geometry is directly related to the entanglement structure of the underlying quantum mechanical degrees of freedom and that aspects of spacetime dynamics (gravitation) can be understood from basic quantum information theoretic constraints. In these notes, we provide an elementary introduction to these developments, suitable for readers with some background in general relativity and quantum field theory. The notes are based on lectures given at the CERN Spring School 2014, the Jerusalem Winter School 2014, the TASI Summer School 2015, and the Trieste Spring School 2015.
 
  • Like
Likes hsdrop, sophiecentaur and berkeman
  • #8
Is there any relationship between final theory and incompleteness theorem, according to Godel’s theorem. Even Stephen Hawing once said that there may not a final theory to discover after all?
 

What is String Theory?

String Theory is a theoretical framework in physics that seeks to reconcile the conflicting theories of General Relativity and Quantum Mechanics. It proposes that the fundamental building blocks of the universe are not point-like particles, but rather tiny, vibrating strings.

What is the current status of String Theory?

The current status of String Theory is that it is still a highly debated and controversial topic in the scientific community. While it has not yet been proven, many physicists believe that it is a promising theory that may eventually lead to a unified understanding of the universe.

Has String Theory been proven?

No, String Theory has not yet been proven. Its complex mathematical equations and experimental challenges make it difficult to test and verify. However, there have been some recent advancements in the theory that show promise for future testing.

What are some criticisms of String Theory?

Some criticisms of String Theory include the fact that it is not yet verifiable, meaning it may never be proven right or wrong. It also requires the existence of extra dimensions, which cannot be observed directly. Additionally, some argue that it is too complex and lacks predictive power.

What is the potential impact of String Theory?

If String Theory is proven to be true, it could have a significant impact on our understanding of the universe and potentially lead to major advancements in technology. It may also provide a unified explanation for all physical phenomena, including gravity and the other fundamental forces.

Similar threads

  • Other Physics Topics
Replies
10
Views
2K
  • Other Physics Topics
Replies
1
Views
2K
  • Beyond the Standard Models
Replies
1
Views
164
  • Beyond the Standard Models
Replies
26
Views
650
  • Beyond the Standard Models
Replies
31
Views
2K
Replies
5
Views
1K
Replies
41
Views
14K
Replies
47
Views
4K
  • Other Physics Topics
Replies
2
Views
2K
  • Beyond the Standard Models
Replies
1
Views
379
Back
Top