NKS Fundamental Physics

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NKS Fundamental Physics
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Breathing in Empty Space

• ...the introduction of a space-time continuum may
  be considered as contrary to nature in view of
  the molecular structure of everything which
  happens on a small scale.

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Breathing in Empty Space

• ...perhaps the success of the Heisenberg method
  points to a purely algebraical method of
  description of nature, that is to the elimination
  of continuous functions from physics.

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Then, however, we must also give up, by
principle, the space-time continuum. It is not
unimaginable that human ingenuity will some day
find methods which will make it possible to
proceed along such a path.
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At the present time, however, such a program
looks like an attempt to breathe in empty space.
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--Albert Einstein, 1936
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Theory of Everything
Quantum Gravity
Simplicity
From http//physicalworld.org/restless_universe/ht
ml/ru_intro_B.html
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NKS in Context, Online

• Which theories are being talked about? How do
  they handle Quantum Mechanics?
• Talk or action? (Debate or Simulate?)
• Who is talking? (Physics or Computer background?)

How come the quantum?
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Wolfram, Fredkin

• Revolutionary (breathing in space!)
• Zuse, Fredkin, Petrov bits, Turing machines,
  automata (0101011101)
• Wolfram trivalent networks, choice of updating,
  causal structure

Revolutionary Clockwork
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Establishment Superstrings

• Uses continuum physics
• Assumes quantum theory
• Planck length limit string modes reverse

Traditional
Fuzzy
Random
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NKS Trivalent Networks
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(1)
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General Relativity Space is a Player!
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NKS does GR
Dimension, Curvature from Linkage
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NKS Meets Quantum

• Randomness not needed (Rule 30)
• Describe world from within network
• EPR particles created together are related when
  observed apart. NKS from strands too small for
  photons
• Feynman histories from update freedom

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Loop Quantum Gravity

• Spin networks
• Quantum mechanics
• Background-independent
• Versions constraints, spin foam

Traditional
origins but
radical
conclusions
Fuzzy
Random
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Origins of LQG
x
c
(-1)
(-2)
n!
xintersections between strands cnumber of
closed loops nspin of unit
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Parallel Transport
New Connection variable becomes
Operator--Turns GR into Quantum!
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2
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2
2
4
2
3
1
2
1
3
1
1
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Which network? Both! All! Its a Quantum,
Quantum World!
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Spin Networks in LQG
Area
3
2
j(j1)
ghG
4
8
3
1
3
3
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Theories Meet Online

• Wolfram Forums
• Yahoo DigitalPhysics
• USEnet group sci.physics.discrete
• Blogs / Journals

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Physics vs. Comp. Sci.

• United States Degrees, Year 2000

National Science Foundation, Division of Science
Resources Statistics Science and Engineering
Degrees 1966-2000 Arlington, VA (NSF 02-327)
July 2002
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Pro-Loop in Wolfram Forum
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Thread EPR and Events

• How to get EPR?
• S
• Reinventing wheel? (But making it discrete)
• Off-topic pet theories distracting!

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YAHOO! Groups DigitalPhysics
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Usenet sci.physics.discrete
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Example Blog Mine!

• Journal is often (not only) about science
• 112 readers, 3 interested in NKS physics
• Reinterpretations (not rules), multiway systems,
  whats program? whats data?

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Amateur Simulations
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Why DEBATE not SIMULATE?

• Networks dont look as cool
• Networks are harder to visualize
• Many ways to represent networks
• How to recognize a particle?
• Uncomfortable with basic ideas

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NKS Physics Online

• More computer scientists than physicists
• More ready to debate than simulate networks
• How to treat cranks and flame wars? Blogs
  better for self-promotion
• Amateurs are meeting professionals
• Theories are compared and contrasted

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Make everything as simple as possible, but not
simpler --Albert Einstein