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Resonance expansion versus the rotating-wave approximation
(2003)
An effective Hamiltonian describing interaction between two subsystems beyond the standard RWA was found. This effective Hamiltonian has the form of a series of resonances. All the possible resonance transitions that can ...
Influence of transducer orientation on shear wave velocity measurements of the iliotibial band
(2021-05-07)
Tissue anisotropy influences estimation of mechanical properties of connective tissues, such as the iliotibial band (ITB). This study investigated the influence of ultrasound transducer rotation and tilt on shear wave ...
Vortices in Bose-Einstein condensates with dominant dipolar interactions
(American Physical Society, 2009-06)
We present full three-dimensional numerical calculations of single vortex states in rotating dipolar condensates. We consider a Bose-Einstein condensate of C 52 r atoms with dipole-dipole and s -wave contact interactions ...
Path integral approach to the full Dicke model
(Elsevier B.V., 2011-10-01)
The full Dicke model describes a system of N identical two level-atoms coupled to a single mode quantized bosonic field. The model considers rotating and counter-rotating coupling terms between the atoms and the bosonic ...
ELASTIC ELECTRON-SCATTERING BY WATER-MOLECULES
(Iop Publishing LtdBristolInglaterra, 1995)
Equação mestra microscópica para o modelo de Rabi
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Física - PPGF, 2013-02-27)
The Rabi model is the most complete one has to describe the interaction between radiation and matter. However, as it is difficult to obtain the exact solution to this model, many of recent atom-field studies have used the ...
Micro-swimming without flagella: propulsion by internal structures
(Maik Nauka/Interperiodica/Springer, 2011-12)
Since a first proof-of-concept for an autonomous micro-swimming device appeared in 2005 a strong interest on the subject ensued. The most common configuration consists of a cell driven by an external propeller, bio-inspired ...
Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
(Elsevier, 2009-12)
Crossings of Saturn's magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini's trajectory was approximately parallel to the magnetopause boundary given by a model ...
Excitação rotacional molecular por impacto de pósitrons
(2018)
Seções de choque rotacionais de moléculas por impacto de pósitrons de baixa energia é o tema deste trabalho. Em especial, desenvolvemos um modelo de espalhamento baseado na primeira aproximação de Born juntamente com um ...