No Inv.: 4189-4191/Pb/Perp/86/3c~1804-1807/BD/Perp/87/4c
No Inv.: 2020/Perp/87/1c
No Inv.: 41/AF/Perp/89/1c~146/S/Perp/93/1c
No Inv.: 8316-8325/P/97/10c
No Inv.: 13418/P/Perp/94/1c
No Inv.: 2014/Perp/87/1c
This thesis presents a systematic study of the orbital evolution, gravitational wave radiation, and merger remnant of the black hole–neutron star binary merger in full general relativity for the first time. Numerical-relativity simulations are performed using an adaptive mesh refinement code, SimulAtor for Compact objects in Relativistic Astrophysics (SACRA), which adopts a wide variety of ze…
The non-Gaussianity in the primordial density fluctuations is a key feature to clarify the early Universe and it has been probed with the Cosmic Microwave Background (CMB) bispectrum. In recent years, we have treated the novel-type CMB bispectra, which originate from the vector- and tensor-mode perturbations and include the violation of the rotational or parity invariance. On the basis of our c…
No Inv.: 1311-1320/P/Perp/95/10c~110-111/S/Perp/2c~698-700/S/Perp/3c~593/S/Perp/93/1c~1242-1253/P/Perp/96/10c~89560-89561/PSM/Perp/04/2c
The most important characteristic of the “world filled with nonlinearity” is the existence of scale interference: disparate space–time scales interfere with each other. Thus, the effects of unknowable scales invade the world that we can observe directly. This leads to various peculiar phenomena such as chaos, critical phenomena, and complex biological phenomena, among others. Conceptual a…