Metastable cosmic strings with delayed scaling can explain the PTA gravitational wave background with tension up to Gmu ~ 3e-5 while evading LVK bounds, producing a plateau and an f^-1/3 tail detectable by future interferometers.
Signals of Inflationary Models with Cosmic Strings
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A class of well-motivated models of inflation end by producing cosmic strings. The current status of efforts to calculate and observe the signals from such models are outlined, with a particular emphasis on cosmic strings, and on the Cosmic Microwave Background signal.
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Gravitational waves from metastable cosmic strings in the delayed scaling scenario
Metastable cosmic strings with delayed scaling can explain the PTA gravitational wave background with tension up to Gmu ~ 3e-5 while evading LVK bounds, producing a plateau and an f^-1/3 tail detectable by future interferometers.