Brian Powell's latest paper: Scalar runnings

  • Context: Graduate 
  • Thread starter Thread starter Chronos
  • Start date Start date
  • Tags Tags
    Paper Scalar
Click For Summary

Discussion Overview

The discussion centers around Brian Powell's recent paper titled "Scalar runnings and a test of slow roll from CMB distortions," which presents new ideas that may challenge existing theories in cosmology. Participants express interest in the implications of the paper and seek further understanding of its concepts, particularly the "running of running" idea and its potential connections to other recent works in inflation phenomenology.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Brian Powell's paper is noted for its challenge to some radical ideas in cosmology, though specific details of these challenges are not elaborated.
  • Participants express appreciation for Powell's work and acknowledge Chronos for bringing the paper to their attention.
  • One participant requests an intuitive explanation of the "running of running" concept, indicating a desire for clarification on complex ideas presented in the paper.
  • There is curiosity about whether the observations in Powell's paper might relate to recent work by Agullo, Ashtekar, and Nelson regarding inflation phenomenology, although no definitive connections are proposed.

Areas of Agreement / Disagreement

Participants generally agree on the significance of Powell's paper and express interest in its implications, but there is no consensus on the interpretations or connections to other works, leaving the discussion open-ended.

Contextual Notes

Participants acknowledge a lack of understanding regarding certain concepts in the paper, particularly the "running of running," which may indicate limitations in their grasp of the underlying mathematics or theoretical implications.

Who May Find This Useful

Readers interested in cosmology, particularly those following recent developments in inflation theory and related observational studies, may find this discussion relevant.

Chronos
Science Advisor
Gold Member
Messages
11,420
Reaction score
750
Brian Powell [bapowell] has a new paper out - Scalar runnings and a test of slow roll from CMB distortions, http://arxiv.org/abs/1209.2024. This is interesting and challenges some of the more radical ideas that are currently popular. Very nice, Brian!
 
Space news on Phys.org
Yes! and also thank to Chronos for spotting the paper and alerting us to it. Personally I'd be glad if anyone were to offer some intuitive explanation. The "running of running" idea...there's a lot of potentially very interesting stuff here I don't adequately understand.

I'd also like to know if there is any way in which the observations described here might have a bearing on the most recent paper (re inflation phenomenology) by Agullo, Ashtekar, Nelson. Perhaps not, but it would be intriguing if so.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 2 ·
Replies
2
Views
625
  • · Replies 54 ·
2
Replies
54
Views
6K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K