https://doi.org/10.1140/epjc/s10052-024-12489-z
Regular Article - Theoretical Physics
Primordial black holes and secondary gravitational waves from generalized power-law non-canonical inflation with quartic potential
Department of Physics, University of Kurdistan, P.O. Box 66177-15175, Pasdaran Street, Sanandaj, Iran
Received:
23
October
2023
Accepted:
28
January
2024
Published online:
6
February
2024
Here, generation of PBHs and secondary GWs from non-canonical inflation with quartic potential have been probed. It is illustrated that, quartic potential in non-canonical setup with a generalized power-law Lagrangian density can source a consistent inflationary era with the latest observational data. Besides, we show that our model satisfies the swampland criteria. At the same time, defining a peaked function of inflaton field as non-canonical mass scale parameter 
of the Lagrangian, gives rise to slow down the inflaton in a while. In this span, namely Ultra-Slow-Roll (USR) stage, the amplitude of the curvature perturbations on small scales enlarges versus CMB scales. It has been illustrated that, further to the peaked aspect of the chosen non-canonical mass scale parameter, the amount of 
parameter of the Lagrangian has enlarging impact on the amplitude of the scalar perturbations. As a consequence of adjusting three parameter Cases of this model, three Cases of PBHs in proper mass scopes to explain LIGO-VIRGO events, microlensing events in OGLE data and DM content in its totality, could be produced. In the end, power-law behavior of the current density parameter of gravitational waves 
in terms of frequency has been examined. Also, the logarithmic power index as 
in the infrared regime is obtained.
© The Author(s) 2024
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