Probing the gauge symmetry breaking of the early universe in 3-3-1 models and beyond by gravitational waves

Taking the 3-3-1 models (with $SU(3)_c \otimes SU(3)_L \otimes U(1)_Y$ gauge group) as examples, we study that a class of new physics models with extended gauge group could undergo one or several first-order phase transitions associated with the spontaneously symmetry breaking processes during the evolution of the universe, which can produce detectable phase transition gravitational wave (GW) signals at future GW experiments, such as LISA, BBO, DECIGO, SKA and aLIGO. These GW signals can provide new sources of GWs with different peak frequencies, and can be used to probe the evolution history of the universe.Comment: Published version for Physics Letters

Extension of the electrodynamics in the presence of the axion and dark photon

We present the extended electrodynamics in the presence of the axion and dark photon. We derive the extended versions of Maxwell's equations and dark Maxwell's equations (for both massive and massless dark photons) as well as the wave equations. We discuss the implications of this extended electrodynamics including the enhanced effects in the particle conversions under the external magnetic or dark magnetic field. We also discuss the recently reported anomaly in the redshifted 21cm spectrum using the extended electrodynamics.Comment: Version matching the publicatio

Probing the baryogenesis and dark matter relaxed in phase transition by gravitational waves and colliders

The cosmological phase transition with Q-balls production mechanism can explain the baryogenesis and dark matter simultaneously, where constraints on dark matter masses and reverse dilution are significantly relaxed. We study how to probe this scenario by collider signals at QCD next-to-leading order and gravitational wave signals.Comment: 22 pages,9 figures,4 tables, published in Phys.Rev.

Electroweak baryogenesis in the framework of the effective field theory

We study the electroweak baryogenesis in the framework of the effective field theory. Our study shows that by introducing a light singlet scalar particle and a dimension-5 operator, it can provide the strong first order phase transition and the source of the CP-violation during the phase transition, and then produce abundant particle phenomenology at zero temperature. We also show the constraints on the new physics scale from the observed baryon-to-photon ratio, the low-energy experiments, and the LHC data.Comment: 12 pages, 5 figures, 1 table; version published in Phys.Rev.

Imprints of ultralight axions on the gravitational wave signals of neutron star-black hole binary

The axion or axion-like particle motivated from a natural solution of strong CP problem or string theory is a promising dark matter candidate. We study the observational effects of ultralight axion or axion-like particles in our Universe by the space-borne gravitational wave detector and the radio telescope. Taking the neutron star-black hole binary as an example, we demonstrate that the phase of gravitational waveform could be obviously modified by the slow depletion of the axion cloud around the black hole formed through the superradiance process. Other effects from dynamical friction with axion dark matter or dipole radiation are also discussed. Finally, we study the detectability of the ultralight axion particles at TianQin and LISA.Comment: 3 figures, comments are welcom

Gravitational waves from axions annihilation through quantum field theory

We use the scattering method to calculate the gravitational wave from axions annihilation in the axion cloud formed by the superradiance process around the Kerr black hole. We consider axions annihilating to gravitons as a three-body decay process and then calculate the corresponding decay width. In this approach, we can simply obtain the radiation power of gravitational wave and give the analytical approximate result with the spin effects of the Kerr black hole. Our study can also provide a cross-check to the numerical results in the traditional method.Comment: Published version in Physical Review