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We discuss the quantum mechanical description of a gravitational wave interacting with a cavity electromagnetic field. Quantum fluctuations of the gravitational vacuum induce squeezing in the optical field. Moreover, this squeezing…

量子物理 · 物理学 2020-06-19 Thiago Guerreiro

Observations of the solar atmosphere show that internal gravity waves are generated by overshooting convection, but are suppressed at locations of magnetic flux, which is thought to be the result of mode conversion into magneto-acoustic…

太阳与恒星天体物理 · 物理学 2017-02-01 G. Vigeesh , J. Jackiewicz , O. Steiner

Through experimentation, we have discovered that with the changing of driving conditions, the Faraday waves undergo two abrupt transitions in spatiotemporal order: onset and instability. The driving amplitudes and frequencies corresponding…

流体动力学 · 物理学 2023-05-16 Peizhao Li , Tiancheng Yu , Xuechang Tu , Han Yan , Wei Wang , Luqun Zhou

We prove a weighted a priori energy estimate for the two dimensional water-waves problem with contact points in the absence of gravity and surface tension. When the surface graph function and its time derivative have some decay near the…

偏微分方程分析 · 数学 2024-02-01 Mei Ming

We investigate experimentally the early stage of the generation of waves by a turbulent wind at the surface of a viscous liquid. The spatio-temporal structure of the surface deformation is analyzed by the optical method Free Surface…

流体动力学 · 物理学 2020-12-09 Anna Paquier , Frederic Moisy , Marc Rabaud

The condition of internal gravity waves (IGW) parametric excitation in the rotating fluid layer heated from above, with the layer vibration along the vertical axis or with periodic modulation in time of the vertical temperature…

流体动力学 · 物理学 2013-08-28 Sergey G. Chefranov , Alexander G. Chefranov

We perform the three dimensional lattice simulation of the magnetic field and gravitational wave productions from bubble collisions during the first-order electroweak phase transition. Except that of the gravitational wave, the power-law…

宇宙学与河外天体物理 · 物理学 2021-08-24 Yuefeng Di , Jialong Wang , Ruiyu Zhou , Ligong Bian , Rong-Gen Cai , Jing Liu

Wave resistance is the drag force associated to the emission of waves by a moving disturbance at a fluid free surface. In the case of capillary-gravity waves it undergoes a transition from zero to a finite value as the speed of the…

流体动力学 · 物理学 2007-05-23 J. Browaeys , J. -C. Bacri , R. Perzynski , M. I. Shliomis

We discuss spectra of gravitational waves which are originated by the strongly first order phase transition at the electroweak symmetry breaking, which is required for a successful scenario of electroweak baryogenesis. Such spectra are…

高能物理 - 唯象学 · 物理学 2015-12-16 Mitsuru Kakizaki , Shinya Kanemura , Toshinori Matsui

A systematic and full description of the theory for a dissipation mechanism of wind wave energy in a spectral representation is given. As a basis of the theory, the fundamental is stated that the most general dissipation mechanism for wind…

大气与海洋物理 · 物理学 2010-06-21 Vladislav G. Polnikov

In the present work we deal with the dynamics of wave packets in a two-dimensional crystal under the action of magnetic and electric fields. The magnetic field is perpendicular to the plane and the electric field is on the plane. In the…

介观与纳米尺度物理 · 物理学 2009-11-13 H. N. Nazareno , P. E. de Brito , E. S. Rodrigues

Submerged flapping foils can convert wave energy directly into thrust, which could be potentially utilised for green marine propulsion. This study analyses the wave-induced flapping hydrofoil propulsion using an in-house developed, new…

流体动力学 · 物理学 2022-09-14 Jingru Xing , Dimitris Stagonas , Phil Hart , Chengchun Zhang , Jianhui Yang , Liang Yang

New parameterizations for the spectra dissipation of wind-generated waves are proposed. The rates of dissipation have no predetermined spectral shapes and are functions of the wave spectrum and wind speed and direction, in a way consistent…

The interaction of obliquely incident surface gravity waves with a vertical flexible permeable membrane wave barrier is investigated in the context of three-dimensional linear wave-structure interaction theory. A general formulation for…

流体动力学 · 物理学 2016-04-20 Santanu Koley , Trilochan Sahoo

Gravito-inertial waves can be excited at the interface of convective and radiative regions and by the Reynolds stresses in the bulk of the convection zone. The magnitude of their energy flux will therefore vary with the properties of the…

太阳与恒星天体物理 · 物理学 2019-02-28 Kyle C. Augustson , Stéphane Mathis

We perform direct numerical simulations of magnetohydrodynamic turbulence in the early universe and numerically compute the resulting stochastic background of gravitational waves and relic magnetic fields. These simulations do not make the…

宇宙学与河外天体物理 · 物理学 2021-07-15 Alberto Roper Pol , Sayan Mandal , Axel Brandenburg , Tina Kahniashvili , Arthur Kosowsky

Experimental and theoretical studies on wind-wave generation have focused primarily on the air-water interface, where viscous effects are small. Here we characterize the influence of the liquid viscosity on the growth of mechanically…

流体动力学 · 物理学 2023-10-13 J. Zhang , A. Hector , M. Rabaud , F. Moisy

Using the construction of the Fermi frame, the field of a gravitational wave can be described in terms of gravito-electromagnetic fields that are transverse to the propagation direction and orthogonal to each other. In particular, the…

广义相对论与量子宇宙学 · 物理学 2020-11-13 Matteo Luca Ruggiero , Antonello Ortolan

The electromagnetic energy equation is analyzed term by term in a 3D simulation of kinetic reconnection previously reported by \citet{vapirev2013formation}. The evolution presents the usual 2D-like topological structures caused by an…

等离子体物理 · 物理学 2015-06-18 Giovanni Lapenta , Martin Goldman , David Newman , Stefano Markidis , Andrey Divin

Dissipation within the turbulent boundary layer under sea ice is one of many processes contributing to wave energy attenuation in ice-covered seas. Although recent observations suggest that the contribution of that process to the total…

大气与海洋物理 · 物理学 2021-03-11 Agnieszka Herman