1 / 43

A new approach to the problem of black hole and cosmological singularities Igor V. Volovich

A new approach to the problem of black hole and cosmological singularities Igor V. Volovich Steklov Mathematical Institute , Moscow QUARKS-2010 16th International Seminar on High Energy Physics

hateya
Télécharger la présentation

A new approach to the problem of black hole and cosmological singularities Igor V. Volovich

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A new approach to the problem of black hole and cosmological singularities Igor V. Volovich SteklovMathematicalInstitute, Moscow QUARKS-2010 16th International Seminar on High Energy Physics Kolomna, Russia, 6-12 June, 2010.

  2. PLAN • Non-Newtonian Classical Mechanics • Functional Probabilistic General Relativity • Singularities

  3. Cosmological Singularity Problem Friedmann cosmology Density of matter and curvature tensorgo to infinity as Whether anything existed before If not, then where did the universe come from?

  4. Black Hole Singularity Singularity Geodesics. Compare: Newton`s equations

  5. General relativity is based on Newton`s mechanics and special relativity. Newton`s mechanics can not be true (not because of relativistic or quantum corrections). Try to change Newton`s approach to mechanics and therefore Einstein`s approach to special and general relativity.

  6. Why Newton`s mechanics can not be true? • Newton`s equations of motions use real numbers. • Classical uncertainty relations • Time irreversibility problem • Singularities

  7. Real Numbers • A real number is an infinite series, which is unphysical:

  8. Newton`s Classical Mechanics Motionofapointbodyisdescribedbythe trajectoryinthephasespace. SolutionsoftheequationsofNewtonorHamilton. Idealization: Arbitrary real numbers—non observable. • Newton`s mechanics deals with non-observable (non-physical) quantities.

  9. Classical Uncertainty Relations

  10. We can observe only rational numbers, fractions, (M, N – integers) With some error

  11. Rational numbers. p-adic numbers Vladimirov, Zelenov, Khrennikov, Kozyrev, Dragovich,… Witten, Freund, Frampton, Parisi,… • Journal: “p-Adic Numbers, Ultrametric Analysis and Applications” (Springer)

  12. Time Irreversibility Problem The time irreversibility problem is the problem of how to explain the irreversiblebehaviour of macroscopic systems from the time-symmetric microscopiclaws. Newton, Schrodinger Eqs –- reversible Navier-Stokes, Bolzmann, diffusion, Entropy increasing --- irreversible Expansion of Universe after Big Bang (?)

  13. Time Irreversibility Problem Boltzmann, Maxwell, Poincar´e, Bogolyubov, Kolmogorov, von Neumann, Landau, Prigogine, Feynman,… Poincar´e, Landau, Prigogine, Ginzburg, Feynman: Problem is open. We will never solve it (Poincare) Quantum measurement? (Landau) Lebowitz, Goldstein, Bricmont: Problem was solved by Boltzmann

  14. Loschmidt paradox • From the symmetry of the Newton equations upon the reverse of time it follows that to every motion of the system on the trajectory towards the equilibrium state one can put into correspondence the motion out of the equilibrium state if we reverse the velocities at some time moment. • Such a motion is in contradiction with the tendency of the system to go to the equilibrium state and with the law of increasing of entropy.

  15. Poincare–Zermeloparadox • Poincar´e recurrence theorem: a trajectory of a bounded isolated mechanical system will be many times come to a very small neighborhood of an initial point. • Contradiction with the motion to the equilibrium state.

  16. Boltzmann`s answers to: • Loschmidt: statistical viewpoint • Poincare — Zermelo: extremely long Poincare recurrence time • Not convincing…

  17. Boltzmann Great Fluctuation ConjectureTo explain entropy increasing • Compare: Friedmann gravitational picture of the Big Bang • Hawking Black Hole InformationParadox • Compare: Black Body. Ourlow-entropyworldisafluctuation inahigher-entropyuniverse

  18. Functional Formulation of Classical Mechanics Usual approaches to the irreversibility problem (Bogolyubov): Start from Newton Eq. Gas of particles Derive Boltzmann Eq. This talk: Irreversibility for one particle Modification of the Newton approach to Classical mechanics: Functional formulation

  19. Functional formulation of classical mechanics • Here the physical meaning is attributed not to an individual trajectory but only to a bunch of trajectories or to the distribution function on the phase space. • The fundamental equation in "functional" approach is not the Newton equation but the Liouville equation for the distribution function of the single particle.

  20. StatesandObservablesinFunctionalProbabilisticMechanics

  21. States and Observables inFunctional Classical Mechanics

  22. Fundamental Equation inFunctional Classical Mechanics LooksliketheLiouvilleequationwhichisusedinstatisticalphysics todescribeagasofparticles. Buthereweuseittodescribeasingleparticle. Instead of Newton equation. No trajectories!

  23. Solutions of the Liouville equation have the property of delocalization which corresponds to irreversibility. • The Newton equation in this approach appears as an approximate equation describing the dynamics of the expected value of the position and momenta for not too large time intervals. • Corrections to the Newton equation are computed

  24. Single particle (moon,…)

  25. No classical determinism • Classical randomness • World is probabilistic (classical and quantum) Compare: Bohr, Heisenberg, von Neumann, Einstein,…

  26. Average Value and Dispersion

  27. Free Motion

  28. DelocalizationIrreversibility

  29. Comparison with Quantum Mechanics

  30. Liouville and Newton. Characteristics

  31. arXiv: 0907.2445 • Foundations of Physics (2010) ….. • Bogolyubov, Krylov (1934), Koopman, Born, Blokhintsev, Prigogine

  32. Corrections to Newton`s Equations

  33. Corrections to Newton`s Equations

  34. Corrections to Newton`s Equations

  35. Corrections

  36. Irreversibility in Functional mechanics

  37. Particle in Box: Not Maxwell

  38. Strategies • Fixed background . Geodesics in functional mechanics Probability distributions of spacetimes • No fixed classical background spacetime. • No Penrose—Hawking singularity theorems

  39. Geodesics in Functional Mechanics

  40. Example

  41. Fixed classical spacetime? • A fixed classical background spacetime does not exist (Kaluza—Klein, Strings, Branes). There is a set of classical universes and a probability distribution which satisfies the Liouville equation (not Wheeler—De Witt). Stochastic inflation?

  42. Conclusions Functional probabilistic formulation of classical mechanics: distribution function instead of individual trajectories. Fundamental equation: Liouville even for a single particle. Irreducible classical randomness. Newton equation—approximate for average values. Corrections to Newton`s trajectories. Attempts to extend the functional approach to general relativity

  43. Information Loss in Black Holes • Hawking paradox. • Particular case of the Irreversibility problem. • Bogolyubov method of derivation of kinetic equations -- to quantum gravity. • Th.M. Nieuwenhuizen, I.V. (2005)

More Related