New cosmic model parameters from South Pole Telescope

In summary: The tightest constraint on the mean curvature that we consider comes from combining the CMB, H0, and BAO datasets:k = -0:0059 +/- 0.0040 : (21)While the CMB+BAO constraint shows a 2.0 sigma preference for k < 0, the significance of this preference decreases as more data are added. The tightest constraint, coming from CMB+H0+BAO, is consistent with zero mean curvature at 1.5 sigma. ...==endquote==So I am not sure what you mean by "that result" and "highest signal" and "cheating", but if you are talking about the result in
  • #36
marcus said:
Maybe I should mention that early universe observation (like Planck mission) is viewed as the main testing arena in other words a proving ground for Quantum Gravity.
This paper which came out a couple of days ago examples that.

http://arxiv.org/abs/1303.4989
Loop Quantum Gravity and the The Planck Regime of Cosmology
Abhay Ashtekar
(Submitted on 20 Mar 2013)

Interesting that he was one of the originators of LQG too.

http://en.wikipedia.org/wiki/Loop_quantum_gravity#History

... In papers leading up to this one synonyms like "pre-inflationary era" have been used in place of "Planck regime".

I always assumed there had to be a gap since the horizon problem is supposedly solved by allowing inflation to expand a region which had reached thermodynamic equilibrium to larger than our horizon. That seems to imply a period before inflation started during which equilibrium could be achieved. "Planck regime" would then be a subset of "pre-inflationary era" with the former ending around 10^-43s and the latter starting around 10^-36s.

Thanks for bringing this up, LQG is something I hadn't look at before, it seems it's going to become more relevant as Planck is reaching the sensitivity where it might become testable.

From your previous message:

Note that the central values are, as usual, negative.

Yeah, by 0.08 sigma :rolleyes:
 
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<h2>1. What is the South Pole Telescope (SPT) and how does it contribute to the study of cosmic models?</h2><p>The South Pole Telescope is a ground-based telescope located at the Amundsen-Scott South Pole Station in Antarctica. It is designed to study the cosmic microwave background (CMB) radiation, which is the oldest light in the universe. By measuring the CMB, the SPT helps scientists understand the structure and evolution of the universe, including the parameters of different cosmic models.</p><h2>2. What are the new cosmic model parameters that have been derived from the SPT data?</h2><p>The new cosmic model parameters derived from the SPT data include the Hubble constant, the density of dark matter, and the density of dark energy. These parameters are important in determining the age, expansion rate, and composition of the universe.</p><h2>3. How does the SPT data improve upon previous measurements of cosmic model parameters?</h2><p>The SPT data provides more precise and accurate measurements of cosmic model parameters compared to previous experiments. This is due to the SPT's location in the South Pole, which allows for clearer and more direct observations of the CMB radiation.</p><h2>4. How do the new cosmic model parameters affect our understanding of the universe?</h2><p>The new cosmic model parameters help refine and validate our understanding of the universe and its evolution. By accurately measuring these parameters, scientists can better understand the distribution of matter and energy in the universe and how it has changed over time.</p><h2>5. What are the potential implications of the new cosmic model parameters on future research and discoveries?</h2><p>The new cosmic model parameters derived from the SPT data can have significant implications on future research and discoveries in the field of cosmology. They can help guide and inform future experiments and simulations, leading to a better understanding of the fundamental nature of the universe.</p>

1. What is the South Pole Telescope (SPT) and how does it contribute to the study of cosmic models?

The South Pole Telescope is a ground-based telescope located at the Amundsen-Scott South Pole Station in Antarctica. It is designed to study the cosmic microwave background (CMB) radiation, which is the oldest light in the universe. By measuring the CMB, the SPT helps scientists understand the structure and evolution of the universe, including the parameters of different cosmic models.

2. What are the new cosmic model parameters that have been derived from the SPT data?

The new cosmic model parameters derived from the SPT data include the Hubble constant, the density of dark matter, and the density of dark energy. These parameters are important in determining the age, expansion rate, and composition of the universe.

3. How does the SPT data improve upon previous measurements of cosmic model parameters?

The SPT data provides more precise and accurate measurements of cosmic model parameters compared to previous experiments. This is due to the SPT's location in the South Pole, which allows for clearer and more direct observations of the CMB radiation.

4. How do the new cosmic model parameters affect our understanding of the universe?

The new cosmic model parameters help refine and validate our understanding of the universe and its evolution. By accurately measuring these parameters, scientists can better understand the distribution of matter and energy in the universe and how it has changed over time.

5. What are the potential implications of the new cosmic model parameters on future research and discoveries?

The new cosmic model parameters derived from the SPT data can have significant implications on future research and discoveries in the field of cosmology. They can help guide and inform future experiments and simulations, leading to a better understanding of the fundamental nature of the universe.

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