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2 results

  • 2 - The Fine-Tuning Considerations

  • from Part I - Setting the Stage
  • Simon Friederich, Rijksuniversiteit Groningen, The Netherlands
  • Book:
    Multiverse Theories
    Published online:
    07 January 2021
    Print publication:
    28 January 2021, pp 20-36

  • Summary

    According to many physicists, several aspects of the laws of nature, the constants, and the cosmic boundary conditions are fine-tuned for life: had they been slightly different, life would not have existed. Here I review the claimed instances of fine-tuning and some of the criticism that has been levelled against the fine-tuning considerations. I also discuss in which sense, if any, fine-tuned parameters may qualify as improbable. Finally, I review the naturalness criterion of theory choice and discuss how violations of naturalness may be regarded as relevant to the discussion about fine-tuning for life.

Gauge Theory of Weak Decays
  • The Standard Model and the Expedition to New Physics Summits
  • Andrzej J. Buras
  • Published online:
    11 June 2020
    Print publication:
    02 July 2020
  • This is the first advanced, systematic and comprehensive look at weak decays in the framework of gauge theories. Included is a large spectrum of topics, both theoretical and experimental. In addition to explicit advanced calculations of Feynman diagrams and the study of renormalization group strong interaction effects in weak decays, the book is devoted to the Standard Model Effective Theory, dominating present phenomenology in this field, and to new physics models with the goal of searching for new particles and interactions through quantum fluctuations. This book will benefit theorists, experimental researchers, and Ph.D. students working on flavour physics and weak decays as well as physicists interested in physics beyond the Standard Model. In its concern for the search for new phenomena at short distance scales through the interplay between theory and experiment, this book constitutes a travel guide to physics far beyond the scales explored by the Large Hadron Collider at CERN.