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Loop Quantum Gravity

Loop Quantum Gravity. Quantum Mechanics. Study of the very small Matter and energy quantized Discrete packets – “quanta”. The Problem. Nothing about the structure of matter Nothing about how gravity is generated Global not local Black holes, the big bang. Loop Quantum Gravity.

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Loop Quantum Gravity

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  1. Loop Quantum Gravity

  2. Quantum Mechanics • Study of the very small • Matter and energy quantized • Discrete packets – “quanta”

  3. The Problem • Nothing about the structure of matter • Nothing about how gravity is generated • Global not local • Black holes, the big bang

  4. Loop Quantum Gravity • Attempts to reconciles QM, GR • Alternative to string theory • Quantum space is granular, 10-35 meters • Spacetime links connecting these chunks

  5. Loops • Links form braided loops • Loops are elementary particles

  6. Twists determine charge • Each twist 1/3 electron charge • Clockwise negative • Counter-clockwise positive • Electron 3 clockwise twists • Positron complement

  7. The Universe • Turbulent, fluctuates 10-44 seconds • A giant quantum computer • The chunks are qubits • Qubits preserve braids

  8. Space does not exist • Space is a web of information • Humans are mere tangles • No fundamental building blocks • Matter emerges as network of relationships • Loops not in space, loops are space • Requires new quantum theory without background

  9. Names • Abhay Ashtekar http://cgpg.gravity.psu.edu • Lee Smolin http://www.qgravity.org/ • Carlo Rovelli http://www.cpt.univ-mrs.fr/~rovelli/ • Sundance Bilson-Thompson • Fotini Markopoulou • David Kribs http://www.uoguelph.ca/~dkribs/

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