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Roman Pasechnik

Senior lecturer

Typical working day..

QCD surprises : Strong CP problem, neutrino mass, Dark Matter and Dark Energy

Author

  • Andrea Addazi
  • Antonino Marcianò
  • Roman Pasechnik
  • Kaiqiang Alan Zeng

Summary, in English

An unexpected explanation for neutrino mass, Dark Matter (DM) and Dark Energy (DE) from genuine Quantum Chromodynamics (QCD) of the Standard Model (SM) is proposed here, while the strong CP problem is resolved without any need to account for fundamental axions. We suggest that the neutrino sector can be in a double phase in the Universe: i) relativistic neutrinos, belonging to the SM; ii) non-relativistic condensate of Majorana neutrinos. The condensate of neutrinos can provide an attractive alternative candidate for the DM, being in a cold coherent state. We will explain how neutrinos, combining into Cooper pairs, can form collective low-energy degrees of freedom, hence providing a strongly motivated candidate for the QCD (composite) axion.

Department/s

  • Theoretical Particle Physics

Publishing year

2022

Language

English

Publication/Series

Physics of the Dark Universe

Volume

36

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • Dark Energy
  • Dark Matter
  • Neutrino mass
  • Strong CP problem in QCD

Status

Published

ISBN/ISSN/Other

  • ISSN: 2212-6864