3 papers
gr-qc2026
Stability and quasi-normal ringing in analogue black-white holes in SNAIL-based traveling-wave parametric amplifiers
Daisuke Yamauchi, Haruna Katayama, Norihiro Tanahashi
The circuit dynamics constructed by traveling-wave parametric amplifiers (TWPA), using superconducting nonlinear asymmetric elements (SNAILs), are known to be approximately describ…
astro-ph.CO2024
Tensor clustering fossils in modified gravity and high-redshift gravitational-wave sound speed
Daisuke Yamauchi
We investigate the tensor clustering fossils as a possible probe to constrain the theory of gravity, in particular the deviation of the sound speed of gravitational waves from the…
hep-ph2024
Dynamical simulations of colliding superconducting strings
Takashi Hiramatsu, Marc Lilley, Daisuke Yamauchi
We study the collisions of elastic superconducting strings, also referred to as current-carrying strings, formed in a field-theory model…