Kinetic Mixing, Proton Decay and Gravitational Waves in SO(10)

Abstract

We present an $SO(10)$ model in which a dimension five operator induces kinetic mixing at the GUT scale between the abelian subgroups $U(1{)}_{B-L}$ and $U(1{)}_R$. We discuss in this framework gauge coupling unification and proton decay, as well as the appearance of superheavy quasistable strings with $G\mu \sim 10^{-8}-10^{-5}$, where $\mu$ denotes the dimensionless string tension parameter. We use Bayesian analysis to show that for $G\mu$ values $\sim 4\times 10^{-7}-10^{-5}$, the gravitational wave spectrum emitted from the quasistable strings is in good agreement with the recent pulsar timing array data. Corresponding to $G\mu$ values $\sim 10^{-8}-2\times 10^{-7}$, proton decay is expected to occur at a rate accessible in the Hyper-Kamiokande experiment. Finally, we present the gravitational wave spectrum emitted by effectively stable strings with $G\mu \approx 10^{-8}$ that have experienced a certain amount of inflation. This can be tested with future detectors in the $\mu$Hz frequency range.

20 pages, 5 captioned figures, published in JHEP

References in corpus (29)

• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• A population of red candidate massive galaxies ~600 Myr after the Big Bang
• Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
• Gravitational-Wave Stochastic Background from Kinks and Cusps on Cosmic Strings
• Stochastic gravitational wave background from smoothed cosmic string loops
• A robust upper limit on N_eff from BBN, circa 2011
• Cosmic string loops in the expanding universe
• Stochastic gravitational-wave background from metastable cosmic strings
• New CMB constraints for Abelian Higgs cosmic strings
• The Need For Speed: Rapid Refitting Techniques for Bayesian Spectral Characterization of the Gravitational Wave Background Using PTAs
• The nanohertz stochastic gravitational wave background from cosmic string loops and the abundant high redshift massive galaxies
• Superheavy quasi-stable strings and walls bounded by strings in the light of NANOGrav 15 year data
• Unification, Proton Decay and Topological Defects in non-SUSY GUTs with Thresholds
• Grand unification and enhanced quantum gravitational effects
• Primordial Monopoles and Strings, Inflation, and Gravity Waves
• Early Structure Formation from Cosmic String Loops in Light of Early JWST Observations
• Cosmic strings from pure Yang-Mills theory
• Inflation, superheavy metastable strings and gravitational waves in non-supersymmetric flipped SU(5)
• Composite Topological Structures in SO(10)
• Cosmic F- and D-strings from pure Yang-Mills theory
• Probing Stochastic Gravitational Wave Background from $SU(5)\times U(1{)}_{\chi }$ Strings in Light of NANOGrav 15-Year Data
• Constraints on Supermassive Black Hole Binaries from JWST and NANOGrav
• Gravitational wave emission from metastable current-carrying strings in $E_6$
• A Predictive $SO(10)$ Model
• Gravitational waves from walls bounded by strings in $SO(10)$ model of pseudo-Goldstone dark matter
• Kinetic mixing and symmetry breaking dependent interactions of the dark photon
• Quantum tunneling in the early universe: Stable magnetic monopoles from metastable cosmic strings
• Topological structures, dark matter and gravitational waves in $E_6$

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