Birth of Universe from String Landscape

In summary, the conversation discusses the idea of treating the string landscape as a lattice and using lattice physics to explore its behavior. The result is a single stable peak with a small but positive cosmological constant. The paper being referenced delves into the concept of quantum tunneling between different vacua and how it affects the statistical probability of a single solution. It is encouraged for readers to look at the paper, which mainly focuses on quantum tunneling and its effect on the statistical probability of states.
  • #1
selfAdjoint
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Here is something new and different:
http://www.arxiv.org/PS_cache/hep-th/pdf/0410/0410213.pdf . Suppose you treat the string landscape, all those vacua and potential ridges, as a LATTICE? And then use lattice physics borrowed from condensed matter research to see what happens to it? And what happens is a single stable peak with a tiny but positive cosmological constant?
 
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I do want to encourage our discussants to look at this paper; it's not long and the deep string stuff is only touched on. Most of it is about quantum tunneling from one vacuum to another and how that affects the statistcal probability of a single solution.
 
  • #3
selfAdjoint said:
I do want to encourage our discussants to look at this paper; it's not long and the deep string stuff is only touched on. Most of it is about quantum tunneling from one vacuum to another and how that affects the statistcal probability of a single solution.
Is "quantum tunneling between states" just another way of saying add these states in a quantum mechanical superposition?
 

1. What is the String Landscape theory?

The String Landscape theory is a concept in string theory which proposes that our universe is one of many possible universes that exist in a multiverse. It suggests that there are 10^500 different universes with varying physical constants and laws, and our universe is just one of these possibilities.

2. How does the String Landscape theory explain the birth of the universe?

The String Landscape theory proposes that the universe was created through a process called cosmic inflation, where the universe expanded rapidly in the first fraction of a second after the Big Bang. This expansion was caused by the release of energy from the collision of two string-like objects, which resulted in the formation of our universe.

3. What evidence supports the String Landscape theory?

Currently, there is no direct evidence that supports the String Landscape theory. However, it is consistent with other theories such as inflationary theory and the Big Bang theory. In addition, the theory also offers a potential solution to the fine-tuning problem, which suggests that the physical constants of our universe are finely tuned to allow for the existence of life.

4. Are there any alternative theories to the String Landscape theory?

Yes, there are other theories that attempt to explain the birth of the universe, including the Big Bang theory, the cyclic model, and the ekpyrotic universe. Each of these theories has its own set of strengths and weaknesses, and the scientific community is still working to determine which theory best explains the birth of the universe.

5. Can the String Landscape theory be tested or proven?

Currently, the String Landscape theory cannot be directly tested or proven. However, scientists are working on developing new technologies and experiments that may provide evidence for the existence of a multiverse. Until then, the String Landscape theory remains a theoretical concept that is still being explored and debated by the scientific community.

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