27 citations · 35 across the 6 of their papers we have counts for
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gr-qc2026
A Small-Throat Boundary Condition for the Tunneling Wave Function of the Universe
Masaki Yamada
We propose a small-throat prescription for the wave function of a closed universe in the Lorentzian path integral formalism, motivated by the idea that universe creation may be obt…
gr-qc2025
A new regularization scheme for the wave function of the Universe in the Lorentzian path integral
Masaki Yamada
The Lorentzian path integral for the wave function of the Universe is only conditionally convergent and thus requires a well-defined prescription. The Picard-Lefschetz approach ens…
gr-qc2025★ 8 cited
Maximal GW amplitude from bubble collisions in supercooled phase transitions
Masaki Yamada
We extend analytic formulas for the gravitational-wave (GW) spectrum from first-order phase transitions to include cosmic expansion under the thin-wall and envelope approximations.…