Supersymmetric hybrid inflation and current-carrying metastable cosmic strings in $SU(4{)}_c\times SU(2{)}_L\times U(1{)}_R$

Abstract

We construct a realistic supersymmetric model for superheavy metastable cosmic strings (CSs) that can be investigated in the current pulsar timing array (PTA) experiments. It is based on shifted $\mu$-hybrid inflation in which the symmetry breaking $SU(4{)}_c\times SU(2{)}_L\times U(1{)}_R\to SU(3{)}_c\times SU(2{)}_L\times U(1{)}_{B-L}\times U(1{)}_R$ proceeds along an inflationary trajectory such that the topologically unstable primordial monopoles are inflated away. {{The breaking of $U(1{)}_{B-L}\times U(1{)}_R\to U(1{)}_Y$ after inflation ends yields the superheavy metastable CSs carrying the right handed neutrino zero modes that generate the stochastic gravitational wave background (SGWB), which we show is consistent with the current PTA data set and the LIGO O3 run}}. The scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$ are compatible with the Planck 2018 and Atacama Cosmology Telescope measurements. Both reheating and leptogenesis are briefly discussed.

Matches the published version

References in corpus (25)

• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• 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
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• Supersymmetric Hybrid Inflation with Non-Minimal Kahler potential
• Stochastic gravitational-wave background from metastable cosmic strings
• Supersymmetric And Smooth Hybrid Inflation In The Light Of WMAP3
• Superheavy quasi-stable strings and walls bounded by strings in the light of NANOGrav 15 year data
• Chaotic inflation, radiative corrections and precision cosmology
• Hybrid Inflation in the Complex Plane
• Observable Gravity Waves from Supersymmetric Hybrid Inflation II
• The spontaneous breaking of a metastable string
• Observable Gravity Waves From Supersymmetric Hybrid Inflation
• Composite Topological Structures in SO(10)
• Inflation in Supersymmetric SU(5)
• Inflation, superheavy metastable strings and gravitational waves in non-supersymmetric flipped SU(5)
• $\mu$-hybrid Inflation, Gravitino Dark Matter and Stochastic Gravitational Wave Background from Cosmic Strings
• Probing Stochastic Gravitational Wave Background from $SU(5)\times U(1{)}_{\chi }$ Strings in Light of NANOGrav 15-Year Data
• Search for heavy, long-lived, charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s}=13\text{TeV}$ using the ATLAS experiment and the full Run 2 dataset
• Gravitational wave emission from metastable current-carrying strings in $E_6$
• Emission of gravitational waves by superconducting cosmic strings
• Superheavy Metastable Strings in SO(10)
• Observable r, Gravitino Dark Matter, and Non-thermal Leptogenesis in No-Scale Supergravity
• Inflation, Proton Decay and Gravitational Waves from Metastable Strings in $SU(4{)}_C\times SU(2{)}_L\times U(1{)}_R$ Model

Cited by in corpus (2)

• Metastable cosmic strings are broken at the start
• Superconducting Strings in $E_6$