Inflation, Proton Decay and Gravitational Waves from Metastable Strings in $SU(4{)}_C\times SU(2{)}_L\times U(1{)}_R$ Model

Abstract

We present a realistic supersymmetric $\mu$-hybrid inflation model within the framework of $SU(4{)}_C\times SU(2{)}_L\times U(1{)}_R$ gauge symmetry, wherein the symmetry breaking $SU(4{)}_C\times SU(2{)}_L\times U(1{)}_R\to SU(3{)}_C\times SU(2{)}_L\times U(1{)}_{B-L}\times U(1{)}_R$ occurs before observable inflation, effectively eliminating topologically stable primordial monopoles. Subsequent breaking of $U(1{)}_{B-L}\times U(1{)}_R\to U(1{)}_Y$ after inflation leads to the formation of superheavy metastable cosmic strings (CSs), capable of producing a stochastic gravitational wave background (SGWB) consistent with the recent PTA data. Moreover, the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$ align with Planck 2018 observations. A consistent scenario for reheating and non-thermal leptogenesis is employed to explain the observed matter content of the universe. Finally, the embedding of $G_{421}$ into the Pati-Salam gauge symmetry $G_{422}$ is briefly discussed, predicting potentially observable proton decay rates detectable at facilities such as Hyper Kamiokande and DUNE.

arXiv comment10 pages, 7 figures

References in corpus (61)

• Planck 2018 results. X. Constraints on inflation
• TianQin: a space-borne gravitational wave detector
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• Laser Interferometer Space Antenna
• Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
• 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
• False Vacuum Inflation with Einstein Gravity
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• Large Scale Structure and Supersymmetric Inflation without Fine Tuning
• How long before the end of inflation were observable perturbations produced?
• Detecting the Cosmic Gravitational Wave Background with the Big Bang Observer
• Hyper-Kamiokande Design Report
• The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background
• AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
• Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 2: The Physics Program for DUNE at LBNF
• Implications of the NANOGrav results for inflation
• Constraints on cosmic strings using data from the third Advanced LIGO-Virgo observing run
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• Pulsar searches and timing with the SKA
• Search for Proton Decay via $p\to e^{+}{\pi }^0$ and $p\to {\mu }^{+}{\pi }^0$ in 0.31 megaton$\cdot$years exposure of the Super-Kamiokande Water Cherenkov Detector
• Improved lattice computation of proton decay matrix elements
• Search for Proton Decay via $p\to \nu K^{+}$ using 260 kiloton$\cdot$year data of Super-Kamiokande
• Mu Problem and Hybrid Inflation in Supersymmetric SU(2)_L x SU(2)_R x U(1)_B-L
• The European Pulsar Timing Array: current efforts and a LEAP toward the future
• Stochastic gravitational-wave background from metastable cosmic strings
• Search for nucleon decay via modes favored by supersymmetric grand unification models in Super-Kamiokande-I
• Reheat temperature in supersymmetric hybrid inflation models
• Supersymmetric Hybrid Inflation Redux
• Supersymmetric And Smooth Hybrid Inflation In The Light Of WMAP3
• Spontaneous B-L Breaking as the Origin of the Hot Early Universe
• A Search for Nucleon Decay via $n\to \bar{\nu }{\pi }^0$ and $p\to \bar{\nu }{\pi }^{+}$ in Super-Kamiokande
• Superheavy quasi-stable strings and walls bounded by strings in the light of NANOGrav 15 year data
• Inflation and Supersymmetry Breaking
• Hybrid Inflation in the Complex Plane
• Observable Gravity Waves from Supersymmetric Hybrid Inflation II
• Search for Proton Decay into Muon plus Neutral Kaon in Super-Kamiokande I, II, and III
• Review of Nucleon Decay Searches at Super-Kamiokande
• Inflation, superheavy metastable strings and gravitational waves in non-supersymmetric flipped SU(5)
• Composite Topological Structures in SO(10)
• $\mu$-hybrid Inflation, Gravitino Dark Matter and Stochastic Gravitational Wave Background from Cosmic Strings
• Testing Realistic $SO(10)$ SUSY GUTs with Proton Decay and Gravitational Waves
• Metastable strings and dumbbells in supersymmetric hybrid inflation
• Probing Stochastic Gravitational Wave Background from $SU(5)\times U(1{)}_{\chi }$ Strings in Light of NANOGrav 15-Year Data
• Observable Proton Decay in Flipped SU(5)
• Shifted $\mu$-hybrid inflation, gravitino dark matter, and observable gravity waves
• Atmospheric Neutrino Anomaly and Supersymmetric Inflation
• Flipped SU(5): unification, proton decay, fermion masses and gravitational waves
• $\mu$-Hybrid Inflation with Low Reheat Temperature and Observable Gravity Waves
• PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
• $\mu$-Term Hybrid Inflation and Split Supersymmetry
• New Inflation in Supersymmetric SU(5) and Flipped SU(5) GUT Models
• Gravity Waves and Gravitino Dark Matter in $\mu$-Hybrid Inflation
• Realistic Inflation in No-Scale $U(1{)}_R$ Symmetric Flipped $SU(5)$
• $\mu$-Hybrid Inflation and Metastable Cosmic Strings in $\mathbf{SU}(3{)}_{\mathbf{c}}\times \mathbf{SU}(2{)}_{\mathbf{L}}\times \mathbf{SU}(2{)}_{\mathbf{R}}\times \mathbf{U}(1{)}_{\mathbf{B}-\mathbf{L}}$
• Proton Decay in Supersymmetric $SU(4{)}_c\times SU(2{)}_L\times SU(2{)}_R$
• The Stochastic Gravitational-Wave Background from Primordial Black Holes in R-Symmetric $SU(5)$ Inflation
• Observable proton decay and gauge coupling unification in the improved missing doublet SU(5) model
• Smooth $\mu$-Hybrid and Non-Minimal Higgs Inflation in $SU(4{)}_C\times SU(2{)}_L\times SU(2{)}_R$ With Observable Gravitational Waves

Cited by in corpus (1)

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