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A very brief history of gravity & recent developments in the area, especially the FTL neutrinos & Verlinde's entropic gravity.
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Not your
Grandfather’s Gravity!
John Ashmead
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.comTuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Endeavor blasts off
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Outline
•A brief history of gravity
•The Runaway universe
•At the edge of the known
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Galileo
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Orbits of the planets
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Mysterium Cosmographicum
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Mysterium Cosmographicum
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Mysterium Cosmographicum
Science is organized
common sense where many a
beautiful theory is killed by an
ugly fact. - Huxley
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Kepler’s orbits,Newton’s Law
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Kepler’s orbits,Newton’s Law
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Hollow Earth
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Cavendish
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Cavendish
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Equivalence principle
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.comTuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Of ants & apples
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Parallel transport
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.comTuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Riemann Curvature Tensor
Effect of curvature
a
a
b
b
b
c
d
d = ∇ b( )∇ a( ) − ∇ a( )∇ b( )( )cTuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Einstein’s field equation
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Einstein’s field equation
xd = Rabcd xc
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Einstein’s field equation
xd = Rabcd xc Tµν
fluid( ) =
ρ 0 0 00 p 0 00 0 p 00 0 0 p
⎛
⎝
⎜⎜⎜⎜⎜
⎞
⎠
⎟⎟⎟⎟⎟
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Einstein’s field equation
xd = Rabcd xc Tµν
fluid( ) =
ρ 0 0 00 p 0 00 0 p 00 0 0 p
⎛
⎝
⎜⎜⎜⎜⎜
⎞
⎠
⎟⎟⎟⎟⎟
Rµν −12gµνR =
8πGc2
Tµν
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Einstein’s field equation
− gµνΛ
xd = Rabcd xc Tµν
fluid( ) =
ρ 0 0 00 p 0 00 0 p 00 0 0 p
⎛
⎝
⎜⎜⎜⎜⎜
⎞
⎠
⎟⎟⎟⎟⎟
Rµν −12gµνR =
8πGc2
Tµν
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Quantum gravity
•Gravity is itself a source of gravity
•Quantum mechanics predicts almost infinite cosmological constant
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Hawking Radiation
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Black hole information paradox
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Black hole information paradox
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
•Surface gravity ~ Temperature
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
•Surface gravity ~ Temperature
•Area ~ entropy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
•Surface gravity ~ Temperature
•Area ~ entropy
•Mass ~ energy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
•Surface gravity ~ Temperature
•Area ~ entropy
•Mass ~ energy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Entropic gravity
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Entropic gravity
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Entropic gravity
For me gravity doesn’t exist,” — Verlinde
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
NASA / WMAP Science Team
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
NASA / WMAP Science Team
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Type Ia supernova
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The music of the spheres
http://www.astro.uvic.ca/~alexhp/new/supernova_sonata.html
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Baryonic Matter (us)
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Rapidly spinning galaxies
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Seeing the invisible
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Dark energy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.comTuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
•CERN/LHC
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
•CERN/LHC
• Higgs Boson
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
•CERN/LHC
• Higgs Boson
• Wimps
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
•CERN/LHC
• Higgs Boson
• Wimps
• Strings
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
The edge of the known
•Astronomy
• Neutrinos
• Cosmic rays
• Gravity waves
• Wimps
•CERN/LHC
• Higgs Boson
• Wimps
• Strings
• Baby Black Holes
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Neutrinos
Neutron
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Neutrinos
Neutron DecayNeutron
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Neutrinos
Sudbery Neutrino Detector
Neutron DecayNeutron
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Cosmic Rays
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Cosmic Rays
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Gravity Waves
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Gravity Waves
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Gravity Waves
Binary pulsar
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Gravity Waves
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Wimps
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
CERN
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
CERN
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
CERN
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Higgs Bosons
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
String theory & Calabi-Yau spaces
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
•Quark gluon plasmas
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
•Quark gluon plasmas
•Cyclic universes
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
•Quark gluon plasmas
•Cyclic universes
•Inflation
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
•Quark gluon plasmas
•Cyclic universes
•Inflation
•Curious abundance of anti-matter
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Research is the process of going up alleys to see if they are blind
•Quark gluon plasmas
•Cyclic universes
•Inflation
•Curious abundance of anti-matter
•…
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
May 27th, 2011Daily Galaxy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
May 27th, 2011Daily Galaxy
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
Since Jan 2010
•Gravity may be an entropic force
•Universe is definitely 95% mysterious
•Neutrino, Cosmic ray, Wimp, & gravitational telescopes online or in development
•LHC online & looking for Higgs boson, Calabi-Yau dimensions, ...
Tuesday, May 31, 2011
Not your grandfather’s gravity www.timeandquantummechanics.com
•Susskind: Cosmic Landscape, black hole war
•Halpern: Collider; Lincoln: large hadron collider
•Ananthaswamy: edge of physics
•Panek: 4% universe; Hammond: Unknown Universe
•Greene, Hawking, Smolin, Yau, Steinhardt & Turok, Wilczek,…
Tuesday, May 31, 2011