Imprints of an early matter-dominated era arising from dark matter dilution mechanism on cosmic string dynamics and gravitational wave signatures
arXiv:2502.16576 · doi:10.1088/1674-1137/addcd6
Abstract
We investigate the influence of an early matter-dominated era in cosmic history on the dynamics of cosmic strings and the resulting stochastic gravitational waves. Specifically, we examine the case where this era originates from the dark matter dilution mechanism within the framework of the minimal left-right symmetric model. By numerically solving the Boltzmann equations governing the energy densities of the relevant components, we meticulously analyze the modifications to the cosmological scale factor, the number density of cosmic string loops, and the gravitational wave spectrum. Our results reveal that the early matter-dominated era causes a characteristic suppression in the high-frequency regime of the gravitational wave spectrum, providing distinct and testable signatures for future ground-based interferometer experiments.
28 pages, 10 figures; revisions to match the published version
References in corpus (22)
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- Advanced LIGO
- Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
- The NANOGrav 15-year Data Set: Search for Signals from New Physics
- Stochastic gravitational wave background from smoothed cosmic string loops
- Opening a new window for warm dark matter
- Constraints on cosmic strings using data from the third Advanced LIGO-Virgo observing run
- Cosmic string loop distribution on all length scales and at any redshift
- Science with the TianQin Observatory: Preliminary Results on Stochastic Gravitational-Wave Background
- Gravitational Wave and CMB Probes of Axion Kination
- Gravitational Waves from Global Cosmic Strings and Cosmic Archaeology
- Probing the Early Universe with Axion Physics and Gravitational Waves
- Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array
- Primordial Black Hole Archaeology with Gravitational Waves from Cosmic Strings
- Searching for cosmic string induced stochastic gravitational wave background with the Parkes Pulsar Timing Array
- Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
- Gravitational Waves from Current-Carrying Cosmic Strings
- Testing BSM Physics with Gravitational Waves
- Dark Matter Dilution Mechanism through the Lens of Large Scale Structure
- WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
- Gravitational waves from cosmic strings associated with pseudo-Nambu-Goldstone dark matter
- Gravitational waves from cosmic superstrings and gauge strings