Acceleration of a universe with -ve Cosmological Constant

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Discussion Overview

The discussion centers around a paper by Stephen Hawking and colleagues that explores the acceleration of a universe with a negative cosmological constant (lambda < 0). The paper employs wavefunctions to connect concepts from string theory and quantum mechanics, aiming to bridge these fields with general relativity. Participants seek feedback on the paper and discuss its implications within the scientific community.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants express interest in the paper's approach of using wavefunctions to demonstrate the universe's acceleration with a negative cosmological constant.
  • There is mention of a previous thread discussing the same paper, indicating ongoing interest and dialogue within the community.
  • One participant references an observation made by another member regarding the potential impact of the paper on string theory, suggesting it could revitalize interest in the field.
  • Links to resources for tracking responses to the paper and upcoming talks at a related convention are provided, indicating a desire for further engagement with the topic.

Areas of Agreement / Disagreement

The discussion reflects a general interest in the paper and its implications, but no consensus is reached regarding its impact or the reactions from the professional community. Multiple viewpoints are presented, and the discussion remains open-ended.

Contextual Notes

Participants reference the paper and related discussions without resolving the implications of the findings or the reactions from the broader scientific community. There is an acknowledgment of the speculative nature of the paper's claims.

Who May Find This Useful

Readers interested in the intersection of quantum mechanics, string theory, and cosmology may find this discussion relevant, particularly those following recent developments in theoretical physics.

shreyakmath
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I have read this new paper by Stephen Hawking and collegues.
It is very interesting to see the use of wavefunctions to show the acceleration of a universe with lambda<0 which fits in the framework of string theory and quantum mechanics. This technique bridges quantum mechanics and general relativity to a satisfactory level.

I wish to have your feedback on the paper.
The link is below:

http://arxiv.org/abs/1205.3807
 
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shreyakmath said:
I have read this new paper by Stephen Hawking and collegues.
It is very interesting to see the use of wavefunctions to show the acceleration of a universe with lambda<0 which fits in the framework of string theory and quantum mechanics. This technique bridges quantum mechanics and general relativity to a satisfactory level.

I wish to have your feedback on the paper.
The link is below:

http://arxiv.org/abs/1205.3807

We already have a thread commenting on this paper:
https://www.physicsforums.com/showthread.php?t=606988
The thread is just a little ways down the menu from yours (about 16 or 17 items down) and it is called "Accelerated Expansion from Negative Lambda".

"MTd2" started the thread in mid-May as soon as the paper appeared and Brian Powell immediately made an intelligent observation:
bapowell said:
Yes. This might just be the adrenaline needle getting plunged into the heart of string theory.

Basically, I think, we are waiting to see what the professional string research community does with this: whether (after this shot of adrenaline) the apparently dead body on the operating table gets up and walks away :biggrin:
 
Last edited:
Ok. Thanx
 

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