Is Cosmic Acceleration Telling Us Something About Gravity?
Abstract
Among the possible explanations for the observed acceleration of the universe, perhaps the boldest is the idea that new gravitational physics might be the culprit. In this colloquium I will discuss some of the challenges of constructing a sensible phenomenological extension of General Relativity, give examples of some candidate models of modified gravity and survey existing observational constraints on this approach. I will conclude by discussing how we might hope to distinguish between modifications of General Relativity and dark energy as competing hypotheses to explain cosmic acceleration.
- Authors:
- Publication Date:
- Research Org.:
- FNAL (Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States))
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 987162
- DOE Contract Number:
- AC02-07CH11359
- Resource Type:
- Multimedia
- Resource Relation:
- Conference: Fermilab Colloquia, Fermi National Accelerator Laboratory (FNAL), Batvia, Illinois (United States), presented on March 01, 2006
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Trodden, Mark. Is Cosmic Acceleration Telling Us Something About Gravity?. United States: N. p., 2006.
Web.
Trodden, Mark. Is Cosmic Acceleration Telling Us Something About Gravity?. United States.
Trodden, Mark. Thu .
"Is Cosmic Acceleration Telling Us Something About Gravity?". United States. https://www.osti.gov/servlets/purl/987162.
@article{osti_987162,
title = {Is Cosmic Acceleration Telling Us Something About Gravity?},
author = {Trodden, Mark},
abstractNote = {Among the possible explanations for the observed acceleration of the universe, perhaps the boldest is the idea that new gravitational physics might be the culprit. In this colloquium I will discuss some of the challenges of constructing a sensible phenomenological extension of General Relativity, give examples of some candidate models of modified gravity and survey existing observational constraints on this approach. I will conclude by discussing how we might hope to distinguish between modifications of General Relativity and dark energy as competing hypotheses to explain cosmic acceleration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 02 00:00:00 EST 2006},
month = {Thu Mar 02 00:00:00 EST 2006}
}