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- Nagoya UniversityJP539 papers
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16 papers · 1 filter
Charged multi-sheet wormhole solutions
Yusuke Makita, Keisuke Izumi, Daisuke Yoshida
We construct charged wormhole solutions with an even number of asymptotically flat regions in the four-dimensional Einstein-Maxwell-massless phantom scalar system via the Harrison…
Test particle motion around a black hole dressed with a spherically symmetric stationary fluid
Ariadna Uxue Palomino Ylla, Yasutaka Koga, Chul-Moon Yoo
We investigate the motion of a massive particle around a spherically symmetric black hole surrounded by a stationary and radial inflow of perfect fluid. The background spacetime is…
General Relativistic Approach to the Vis-viva Equation on Schwarzschild Metric
Qi Peng, Shuichiro Yokoyama, Kiyotomo Ichiki
A modification to the vis-viva equation that accounts for general relativistic effects is introduced to enhance the accuracy of predictions of orbital motion and precession. The up…
First-step experiment in developing optical-spring quantum locking for DECIGO: sensitivity optimization for simulated quantum noise by completing the square
Tomohiro Ishikawa, Yuki Kawasaki, Kenji Tsuji +12
DECi-hertz Interferometer Gravitational Wave Observatory (DECIGO) is a future mission for a space-borne laser interferometer. DECIGO has 1,000-km-long arm cavities mainly to detect…
Modified cosmology from the thermodynamics of apparent horizon
Shin'ichi Nojiri, Sergei D. Odintsov, Tanmoy Paul
In the realm of the Bekenstein-Hawking entropy, the thermodynamics of apparent horizon bridges with the usual FLRW (Friedmann-Lemaître-Robertson-Walker) equation only for a special…
Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds
Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen +11
For further gravitational wave (GW) detections, it is significant to invent a technique to reduce all kinds of mirror displacement noise dominant at low frequencies for ground-base…