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  2. Penrose–Hawking singularity theorems - Wikipedia

    en.wikipedia.org/wiki/PenroseHawking...

    The Hawking singularity theorem is based on the Penrose theorem and it is interpreted as a gravitational singularity in the Big Bang situation. Penrose shared half of the Nobel Prize in Physics in 2020 "for the discovery that black hole formation is a robust prediction of the general theory of relativity".

  3. Conformal cyclic cosmology - Wikipedia

    en.wikipedia.org/wiki/Conformal_cyclic_cosmology

    Conformal cyclic cosmology (CCC) is a cosmological model in the framework of general relativity and proposed by theoretical physicist Roger Penrose. [1] [2] [3] In CCC, the universe iterates through infinite cycles, with the future timelike infinity (i.e. the latest end of any possible timescale evaluated for any point in space) of each previous iteration being identified with the Big Bang ...

  4. Cosmic censorship hypothesis - Wikipedia

    en.wikipedia.org/wiki/Cosmic_censorship_hypothesis

    Roger Penrose first formulated the cosmic censorship hypothesis in 1969. The hypothesis was first formulated by Roger Penrose in 1969, [ 2 ] and it is not stated in a completely formal way. In a sense it is more of a research program proposal: part of the research is to find a proper formal statement that is physically reasonable, falsifiable ...

  5. Raychaudhuri equation - Wikipedia

    en.wikipedia.org/wiki/Raychaudhuri_equation

    In general relativity, the Raychaudhuri equation, or Landau–Raychaudhuri equation, [1] is a fundamental result describing the motion of nearby bits of matter.. The equation is important as a fundamental lemma for the Penrose–Hawking singularity theorems and for the study of exact solutions in general relativity, but has independent interest, since it offers a simple and general validation ...

  6. Cycles of Time - Wikipedia

    en.wikipedia.org/wiki/Cycles_of_Time

    Cycles of Time: An Extraordinary New View of the Universe is a science book by mathematical physicist Roger Penrose published by The Bodley Head in 2010. The book outlines Penrose's Conformal Cyclic Cosmology (CCC) model, which is an extension of general relativity but opposed to the widely supported multidimensional string theories and cosmological inflation following the Big Bang.

  7. The Large Scale Structure of Space–Time - Wikipedia

    en.wikipedia.org/wiki/The_Large_Scale_Structure...

    Whereas Hawking and Ellis employ global analysis extensively but say relatively little about perturbative methods, the other two books neglect global analysis and cover in great detail perturbations. He believed Hawking and Ellis did a great job summarizing recent developments in the field (as of 1974) and that the intended audience is a ...

  8. Fashion, Faith, and Fantasy in the New Physics of the Universe

    en.wikipedia.org/wiki/Fashion,_Faith,_and...

    The first three Chapters discussed three important theories with the feature of fashion, faith and fantasy, respectively. They are the string theory (fashion), quantum mechanics (faith) and the current cosmology theory (fantasy). From Chapter 4, Penrose introduced his own theory, including the controversial Conformal Cyclic Cosmology.

  9. Penrose interpretation - Wikipedia

    en.wikipedia.org/wiki/Penrose_interpretation

    Penrose's idea is inspired by quantum gravity because it uses both the physical constants and .It is an alternative to the Copenhagen interpretation which posits that superposition fails when an observation is made (but that it is non-objective in nature), and the many-worlds interpretation, which states that alternative outcomes of a superposition are equally "real," while their mutual ...