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The spontaneous breaking of a metastable string
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We consider the phase transition of a string with tension $\eps_1$ to a string with a smaller tension $\eps_2$. The transition proceeds through quantum tunneling, and we calculate in arbitrary number of dimensions the pre-exponential factor multiplying the leading semiclassical exponential expression for the rate of the process. At $\eps_2=0$ the found formula for the decay rate also describes a break up of a metastable string into two pieces.
Forward citations
Cited by 4 Pith papers
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A more effective QCD string at colliders: Decay of excited strings and the worldsheet axion
Excitations of the worldsheet axion in an effective QCD string theory produce a phase-dependent effective tension that exponentially modifies the rate of string breaking via quark pair nucleation.
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The decay rate of metastable cosmic strings beyond the thin-string approximation
Lattice simulations find the bounce action for metastable cosmic string decay suppressed compared to thin-string estimates, implying faster decay.
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New gravitational-wave templates for metastable cosmic strings: Loop breaking versus network collapse
Metastable cosmic strings produce a gravitational wave background that is best modeled with three parameters (string tension Gμ plus independent time scales t_LB and t_NC), yielding a compact analytical spectrum when ...
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Thermal Metastable Strings in One-Scale Models and Gravitational Waves
Thermal effects shift the PTA-compatible parameter region in a minimal dark-sector model to lower dark fine-structure constant and higher monopole-to-string-tension ratio by making thermally induced nucleation the dom...
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