The normal mode theory for warping of galaxy disks, in which disks are assumed to be tilted with respect to the equator of a massive, flattened dark halo, assumes a rigid, fixed halo. However, consideration of the back-reaction by a misaligned disk on a massive particle halo shows there to be strong coupling leading to efficient damping (or in some circumstances excitation) of the misalignment,...

a acceleration dof degree of freedom H Frequency response function f Applied force FE Finite Element FRF Frequency Response Function Φc The mode shape matrix of the bare table at dof to be constrained Subscripts c degree of freedom at locations to be constrained f dof at free locations t dof at tip of the slip table s dof at the classic shaker input location on the slip table i any other dof no...

In the framework of SU (3) symmetry, we present a general analysis of B meson decays into two lighter uncharmed mesons (both pairs of pseudoscalar mesons and pairs of vector and pseudoscalar mesons). From the analysis we find constraints on γ and discuss their validity. The most useful new constraint is obtained by considering the decay modes B 0 → Kπ and B + → π 0 π +. In decays into pairs of ...

Cross-sections and thermally averaged rate coefficients for vibration (de-)excitation of a water molecule by electron impact are computed; one two quanta excitations considered all three normal modes. The calculations use theoretical approach that combines the mode approximation vibrational states water, frame transformation employed to evaluate scattering matrix transitions UK molecular R-matr...

How energy moves around between the vibrational modes of a polyatomic molecule is of considerable interest, both spectroscopically and theoretically. Historically the most widely known studies of intramolecular vibrational energy redistribution are associated with thermal unimolecular reactions [1], In the developing unimolecular reaction rate theory, Slater [2] described the excited molecule a...

Vibrational strong coupling (VSC) has recently been shown to change the rate and chemoselectivity of ground-state chemical reactions via formation light–matter hybrid polaritonic states. However, observation that vibrational-mode symmetry a large influence on charge-transfer under VSC suggests considerations could be used control other types selectivity through VSC. Here, we show influences ste...

Normal mode decomposition of atomic vibrations has been used to provide microscopic under-standing thermal transport in amorphous solids for decades. In normal methods, it is naturally assumed that atoms vibrate around their equilibrium positions and individual modes are the fundamental vibrational excitations transporting heat. With abundance predictions from methods experimental measurements ...

In this article the dynamic features of the highly excited vibrational states of the hypochlorous acid (HOCl) non-integrable system are studied using the dynamic potential and Lyapunov exponent approaches. On the condition that the 3:1 resonance between the H-O stretching and H-O-Cl bending modes accompany the 2:1 Fermi resonance between the O-Cl stretching and H-O-Cl bending modes, it is found...

Ferromagnesite [(Mg,Fe)CO3] has been proposed as a candidate host mineral for carbon in the Earth’s mantle. Studying its physical and chemical properties at relevant pressures and temperatures helps our understanding of deep-carbon storage in the planet’s interior and on its surface. Here we have studied high-pressure vibrational and elastic properties of magnesian siderite [(Mg0.35Fe0.65)CO3] ...