| LoFi version for PDAs |
Help
Search
Members
Calendar
|
| Welcome Guest ( Log In | Register ) | Resend Validation Email |
Add reply · Start new topic · Start new poll |
| dudeness |
Posted: Jul 19 2010, 05:21 AM
|
|
Newbie ![]() Group: Members Posts: 1 Joined: 19-July 10 Positive Feedback: 0% Feedback Score: 0 |
why could gravity not be the result of inflation?
|
|
Send PM · Send email ·
|
| brucep |
Posted: Jul 19 2010, 06:57 AM
|
||
|
Advanced Member ![]() ![]() ![]() ![]() ![]() Group: Power Member Posts: 3403 Joined: 3-October 09 Positive Feedback: 88.37% Feedback Score: 146 |
Since you are discussing the inflationary model the opposite is true. Read the following discussion by Alan Guth http://web.mit.edu/physics/news/physicsatm...2_cosmology.pdf Excerpt to tantalize the readers: "According to general relativity, however, there is a gravitational effect which is very important under these circumstances. Pressures, like energy densities, create gravitational fields, and in particular a positive pressure creates an attractive gravitational field. The negative pressure of the false vacuum, therefore, creates a repulsive gravitational field, which is the driving force behind inflation." I really enjoy reading Alan Guth. He's so easy to read and the subject matter [cosmology] is just so fascinating. His book "The Inflationary Universe" is a wonderful story about the discovery of a great physics model and a treatise on the history of modern cosmology. I hope that he and Linde get a Nobel some day. |
||
|
Send PM ·
|
|
Add reply · Start new topic · Start new poll |