The Accelerating Universe: Landscape or Modified Gravity?
APA
Dubovsky, S. (2008). The Accelerating Universe: Landscape or Modified Gravity?. Perimeter Institute. https://pirsa.org/08020046
MLA
Dubovsky, Sergei. The Accelerating Universe: Landscape or Modified Gravity?. Perimeter Institute, Feb. 28, 2008, https://pirsa.org/08020046
BibTex
@misc{ pirsa_PIRSA:08020046, doi = {10.48660/08020046}, url = {https://pirsa.org/08020046}, author = {Dubovsky, Sergei}, keywords = {Cosmology}, language = {en}, title = {The Accelerating Universe: Landscape or Modified Gravity?}, publisher = {Perimeter Institute}, year = {2008}, month = {feb}, note = {PIRSA:08020046 see, \url{https://pirsa.org}} }
New York University (NYU)
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Abstract
The most remarkable recent discovery in fundamental physics is that the Universe is undergoing accelerated expansion. A proper understanding of its physical origin forces us to make a hard choice between dynamical and environmental scenarios. The former approach predicts the existence of a new long distance physics in the gravitational sector, while the second relies on the vast landscape of vacua with different values of the cosmological constant. I will discuss achievements and shortcomings of both approaches, and illustrate them in the concrete examples.