Post on 22-Jan-2016
Not your
Grandfather’s Gravity!
John Ashmead
Not your grandfather’s gravity www.timeandquantummechanics.com
Free fall thru gravity
•Newton’s Action at a distance
•Einstein’s Gravity as curvature
•Accelerating expansion of universe
•Thermodynamic gravity
•OPERAs’ superluminal neutrinos
Not your grandfather’s gravity www.timeandquantummechanics.com
Three cheers for the black death
✤Kicked off the industrial revolution
✤Built up resistance to AIDS
✤Gave Newton time to discover gravity
Not your grandfather’s gravity www.timeandquantummechanics.com
The Apple & the Moon
Why should that apple always descend perpendicularly to the ground…Assuredly the reason is, that the Earth draws it. There must be a drawing power in matter. And the sum of the drawing power in the matter of the Earth must be in the Earth's centre…Therefore the apple draws the Earth, as well as the Earth draws the apple.
Although he had been undistinguished as a Cambridge student, Newton's private studies at his home in Woolsthorpe [1665-1666] saw the development of his theories on calculus, optics and the law of gravitation
Not your grandfather’s gravity www.timeandquantummechanics.com
Endless ellipses most beautiful
Not your grandfather’s gravity www.timeandquantummechanics.com
Jupiter’s Moons 16 ½ minutes off schedule
22 Aug 1676
Ole Rømer
Not your grandfather’s gravity www.timeandquantummechanics.com
Of ants & apples
Not your grandfather’s gravity www.timeandquantummechanics.com
The Trampoline
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Spear points & curvature
Julius
Markus
Not your grandfather’s gravity www.timeandquantummechanics.com
Riemann Curvature Tensor
east
east
north
north
start
finish
Julius
Effect of curvature
Deltius
deltius= ∇ east( )∇ north( )−∇ north( )∇ east( )( )uprightius
Markus
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 −12
gμνR=8πGc2 Tμν
Importa
nt bit
Suspicious bit
Not your grandfather’s gravity www.timeandquantummechanics.com
Frame dragging
Not your grandfather’s gravity www.timeandquantummechanics.com
Black holes & white holes
Not your grandfather’s gravity www.timeandquantummechanics.com
October 4th,2011
Riess, Perlmutter, & Schmidt get 2011 Nobel in physics for discovery of expansion of universe & dark energy
Not your grandfather’s gravity www.timeandquantummechanics.com
Type Ia supernova
Not your grandfather’s gravity www.timeandquantummechanics.com
NASA / WMAP Science Team
Not your grandfather’s gravity www.timeandquantummechanics.com
Dark energy
Not your grandfather’s gravity www.timeandquantummechanics.com
Hawking Radiation
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The black hole Information
Paradox
Or, where did
the fish go?
Not your grandfather’s gravity www.timeandquantummechanics.com
Thermodynamics & gravity
•Surface gravity ~ Temperature
•Area ~ entropy
•Mass ~ energy
Not your grandfather’s gravity www.timeandquantummechanics.com
Verlinde’s entropic gravity
For me gravity doesn’t exist,” — Verlinde
Not your grandfather’s gravity www.timeandquantummechanics.com
Mass, energy, & momentum
•Tardyons - slower than light, massive
•Photons - Are light, no mass
•Tachyons - faster than light, imaginary mass
E ≈mc2
E =mc2
1−v2
c2
Not your grandfather’s gravity www.timeandquantummechanics.com
Little Neutral Ones
Sudbery Neutrino Detector
Neutron DecayNeutron
Not your grandfather’s gravity www.timeandquantummechanics.com
superluminal neutrinos?
Baseline of 730 kilometers, arrival too early by 60 nanoseconds: speed of neutrinos is 2.48
10-5 c too fast
Not your grandfather’s gravity www.timeandquantummechanics.com
85 papers as of 10/12126 papers as of 11/18
Not your grandfather’s gravity www.timeandquantummechanics.com
A disputation Of Ideas•Forbidden by cherenkov radiation
•Ruled out by SN1987A
•Clock comparison wrong
•Group velocity is not info velocity
•Short cut via another dimension
•Neutrino speed is really the limit
•Clear evidence for pet theory x
Not your grandfather’s gravity www.timeandquantummechanics.com
Non-barking Higgs
If a Higgs particle is produced in a proton-proton collision, an LHC detector might infer what you see here. The four straight red lines indicate very high-energy particles (muons) that are the remnants of the disintegrating Higgs.
Not your grandfather’s gravity www.timeandquantummechanics.com
How will it fall out?
•Emergent gravity
•Frame dragging
•Superluminal neutrinos
•Nobel for discovery of accelerated expansion of universe
•Higgs has fewer & fewer places to hide
Not your grandfather’s gravity www.timeandquantummechanics.com
•Richard Hammond Unknown Universe
•Leonard Susskind Black Hole War
•Anil Ananthaswamy Edge of Physics
•Richard Panek 4% Universe
•Lisa Randall Knocking on Heaven’s door
References