339 citations · 2.8k across the 32 of their papers we have counts for
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On the estimation of gravitational wave spectrum from cosmic domain walls
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
We revisit the production of gravitational waves from unstable domain walls analyzing their spectrum by the use of field theoretic lattice simulations with grid size , whic…
Gravitational waves from smooth hybrid new infation
Masahiro Kawasaki, Ken'ichi Saikawa, Naoyuki Takeda
We calculate the production of the gravitational waves from a double inflation model with lattice simulations. Between the two inflationary stages, gravitational waves with a chara…
Study of gravitational radiation from cosmic domain walls
Masahiro Kawasaki, Ken'ichi Saikawa
In this paper, following the previous study, we evaluate the spectrum of gravitational wave background generated by domain walls which are produced if some discrete symmetry is spo…
Evolution of String-Wall Networks and Axionic Domain Wall Problem
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
We study the cosmological evolution of domain walls bounded by strings which arise naturally in axion models. If we introduce a bias in the potential, walls become metastable and f…
Gravitational Waves from Collapsing Domain Walls
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
We study the production of gravitational waves from cosmic domain walls created during phase transition in the early universe. We investigate the process of formation and evolution…