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@ARTICLE{Buchmuller:593131,
      author       = {Buchmuller, Wilfried and Domcke, Valerie and Schmitz, Kai},
      title        = {{M}etastable cosmic strings},
      journal      = {Journal of cosmology and astroparticle physics},
      volume       = {11},
      number       = {11},
      issn         = {1475-7508},
      address      = {London},
      publisher    = {IOP},
      reportid     = {PUBDB-2023-05315, CERN-TH-2023-118. DESY-23-117},
      pages        = {020},
      year         = {2023},
      abstract     = {Many symmetry breaking patterns in grand unified theories
                      (GUTs) give rise to cosmic strings that eventually decay
                      when pairs of GUT monopoles spontaneously nucleate along the
                      string cores. These strings are known as metastable cosmic
                      strings and have intriguing implications for particle
                      physics and cosmology. In this article, we discuss the
                      current status of metastable cosmic strings, with a focus on
                      possible GUT embeddings and connections to inflation,
                      neutrinos, and gravitational waves (GWs). The GW signal
                      emitted by a network of metastable cosmic strings in the
                      early universe differs, in particular, from the signal
                      emitted by topologically stable strings by a suppression at
                      low frequencies. Therefore, if the underlying symmetry
                      breaking scale is close to the GUT scale, the resulting GW
                      spectrum can be accessible at current ground-based
                      interferometers as well as at future space-based
                      interferometers, such as LISA, and at the same time account
                      for the signal in the most recent pulsar timing data sets.
                      Metastable cosmic strings thus nourish the hope that future
                      GW observations might shed light on fundamental physics
                      close to the GUT scale.},
      cin          = {T},
      ddc          = {530},
      cid          = {I:(DE-H253)T-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611) / GRK
                      2149 - GRK 2149: Starke und schwache Wechselwirkung - von
                      Hadronen zu Dunkler Materie (269952272)},
      pid          = {G:(DE-HGF)POF4-611 / G:(GEPRIS)269952272},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001149204000007},
      doi          = {10.1088/1475-7516/2023/11/020},
      url          = {https://bib-pubdb1.desy.de/record/593131},
}