SFU Cosmology Seminars

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Friday, 18 March 2011, 15:30 in B9201

Prof. Lam Hui (Columbia University)

Equivalence principle and cosmic acceleration (physics colloquium)
Recent attempts to modify gravity at long distances to explain cosmic acceleration generally introduce new degrees of freedom, for instance a scalar, that must be screened in the solar system to satisfy stringent experimental constraints. We will discuss how such screening mechanisms might lead to order unity equivalence principle violations - in suitable environments - namely, objects with different degrees of screening fall at different rates. Proposals to observe such effects, or rule out such theories, will be discussed. We will also discuss screening mechanisms that are robust against this kind of equivalence principle violation.

Seminars in 2010:

2010-09-14 14:00 in P8445B - Stephane Coutu (PennState): Highest energy physics with the Pierre Auger Observatory

2010-09-22 14:00 in P8445A - Wolfgang Rau (Queen's University): Dark matter search with CDMS and SuperCDMS

2010-10-19 14:00 in P8445B - Adam Moss (UBC): Precision cosmology defeats void models for acceleration

2010-11-09 14:00 in P8445B - Cosimo Bambi (IPMU): Accretion process in Kerr space-time with arbitrary value of the spin parameter

2010-12-07 14:00 in P8445B - Kris Starosta (SFU): Shell structure of nuclei and evolution of the Universe

2011-01-14 15:30 in AQ3154 - John Mather (NASA Goddard Space Flight Center): James Webb Space Telescope: Progress and scientific promise (physics colloquium)

2011-03-01 14:00 in P8445B - Ed Copeland (University of Nottingham): Scaling solutions in cosmology

2011-03-04 15:30 in B9201 - Ed Copeland (University of Nottingham): Models of dark energy (physics colloquium)

2011-03-15 14:00 in P8445B - Lam Hui (Columbia University): Bubble collisions in the early universe

2011-03-18 15:30 in B9201 - Lam Hui (Columbia University): Equivalence principle and cosmic acceleration (physics colloquium)

[ See complete seminar archives | iCal feed ]

Modified by Andrei Frolov <frolov@sfu.ca> on 2023-11-01

2010-09-14 14:00 in P8445B	- Stephane Coutu (PennState): Highest energy physics with the Pierre Auger Observatory
2010-09-22 14:00 in P8445A	- Wolfgang Rau (Queen's University): Dark matter search with CDMS and SuperCDMS
2010-10-19 14:00 in P8445B	- Adam Moss (UBC): Precision cosmology defeats void models for acceleration
2010-11-09 14:00 in P8445B	- Cosimo Bambi (IPMU): Accretion process in Kerr space-time with arbitrary value of the spin parameter
2010-12-07 14:00 in P8445B	- Kris Starosta (SFU): Shell structure of nuclei and evolution of the Universe
2011-01-14 15:30 in AQ3154	- John Mather (NASA Goddard Space Flight Center): James Webb Space Telescope: Progress and scientific promise (physics colloquium)
2011-03-01 14:00 in P8445B	- Ed Copeland (University of Nottingham): Scaling solutions in cosmology
2011-03-04 15:30 in B9201	- Ed Copeland (University of Nottingham): Models of dark energy (physics colloquium)
2011-03-15 14:00 in P8445B	- Lam Hui (Columbia University): Bubble collisions in the early universe
2011-03-18 15:30 in B9201	- Lam Hui (Columbia University): Equivalence principle and cosmic acceleration (physics colloquium)