Zobrazeno 1 - 10
of 391
pro vyhledávání: '"Matsumoto Nobuyuki"'
We propose an experiment for constructing a spatial cat state of a suspended mirror with an order of $\mathcal{O}$(mg). The mirror is set at the center of two mirrors, creating two optical cavities and optical springs. The induced potential exhibits
Externí odkaz:
http://arxiv.org/abs/2404.08435
To accelerate the HMC with field transformation, we consider a variant of the trivializing map, the decimation map, which can be regarded as a coarse-graining transformation. Using the 2D $U(1)$ pure gauge model, combined with the guided Monte Carlo
Externí odkaz:
http://arxiv.org/abs/2312.04800
Autor:
Shichijo, Tomoya, Matsumoto, Nobuyuki, Matsumura, Akira, Miki, Daisuke, Sugiyama, Yuuki, Yamamoto, Kazuhiro
We investigated the quantum state of an optomechanical suspended mirror under continuous measurement and feedback control using Wiener filtering. We focus on the impact of the two-mode theory of suspended mirror on the quantum state, which is describ
Externí odkaz:
http://arxiv.org/abs/2303.04511
Autor:
Boyle, Peter, Izubuchi, Taku, Jin, Luchang, Jung, Chulwoo, Lehner, Christoph, Matsumoto, Nobuyuki, Tomiya, Akio
We construct an approximate trivializing map by using a Schwinger-Dyson equation. The advantage of this method is that: (1) The basis for the flow kernel can be chosen arbitrarily by hand. (2) It can be applied to the general action of interest. (3)
Externí odkaz:
http://arxiv.org/abs/2212.11387
Autor:
Sugiyama, Yuuki, Shichijo, Tomoya, Matsumoto, Nobuyuki, Matsumura, Akira, Miki, Daisuke, Yamamoto, Kazuhiro
Pendulums have long been used as force sensors due to their ultimately low dissipation (high-quality factor) characteristic. They are widely used in the measurement of the gravitational constant, detection of gravitational waves, and determination of
Externí odkaz:
http://arxiv.org/abs/2212.11056
Autor:
Miki, Daisuke, Matsumoto, Nobuyuki, Matsumura, Akira, Shichijo, Tomoya, Sugiyama, Yuuki, Yamamoto, Kazuhiro, Yamamoto, Naoki
Publikováno v:
Phys. Rev. A 107, 032410 (2023)
This study is aimed at investigating the feasibility of generating quantum entanglement between macroscopic mechanical mirrors in optomechanical systems while under continuous measurement and feedback control. We carefully derive a covariance matrix
Externí odkaz:
http://arxiv.org/abs/2210.13169
Autor:
Hamada, Yu, Matsumoto, Nobuyuki
We consider how the energy can be stored in the boundary of spacetime, in particular in a spherical bubble that can be made by a quantum gravitational process. Our calculation is performed within the framework of classical Einstein gravity by identif
Externí odkaz:
http://arxiv.org/abs/2210.10167
Autor:
Matsumoto, Nobuyuki
Recently, Hoshina, Fujii, and Kikukawa pointed out that the naive lattice gauge theory action in Minkowski signature does not result in a unitary theory in the continuum limit, and Kanwar and Wagman proposed alternative lattice actions to the Wilson
Externí odkaz:
http://arxiv.org/abs/2206.00865
The numerical sign problem is a major obstacle to the quantitative understanding of many important physical systems with first-principles calculations. Typical examples for such systems include finite-density QCD, strongly-correlated electron systems
Externí odkaz:
http://arxiv.org/abs/2205.00652