نتایج جستجو برای: rotational degrees of freedom

تعداد نتایج: 21169876  

Journal: :Physics Letters B 2023

We show a theorem proving that non-local bosonic field upon covariant interaction with confining gauge undergoes the confinement of its degrees freedom present in free theory changing completely physical mass spectrum following Kugo-Ojima criterion. This is applicable to an infinite number excitations including ghosts whereas we pay special attention modes complex conjugate masses, states appea...

Journal: :Physical review letters 2007
Giovanna Morigi Pepijn W H Pinkse Markus Kowalewski Regina de Vivie-Riedle

We predict that it is possible to cool rotational, vibrational, and translational degrees of freedom of molecules by coupling a molecular dipole transition to an optical cavity. The dynamics is numerically simulated for a realistic set of experimental parameters using OH molecules. The results show that the translational motion is cooled to a few muK and the internal state is prepared in one of...

2003
S. T. Cui C. McCabe P. T. Cummings H. D. Cochran

Realistic molecular simulations agree with previously published surface force experiments that n-dodecane confined between mica surfaces displays shear-thinning starting at shear rate orders of magnitude less than in the bulk fluid. We probe the origin of this behavior by studying rotational and diffusional relaxations in the simulated fluid and find a freezing-out of the rotational degrees of ...

Journal: :SciPost physics 2021

Non-canonical degrees of freedom provide one the most promising routes towards characterising a range important phenomena in condensed matter physics. Potential candidates include pseudogap regime cuprates, heavy-fermion behaviour, and also indeed magnetically ordered systems. Nevertheless it remains an open question whether non-canonical algebras can fact legitimate quantum freedom. In this pa...

Journal: :CoRR 2007
Damien Chablat Philippe Wenger

This paper is devoted to the kinematic design of a new six degree-of-freedom haptic device using two parallel mechanisms. The first one, called orthoglide, provides the translation motions and the second one, called agile eye, produces the rotational motions. These two motions are decoupled to simplify the direct and inverse kinematics, as it is needed for real-time control. To reduce the inert...

Journal: :Advanced Robotics 2001
Takateru Urakubo Kazuo Tsuchiya Katsuyoshi Tsujita

In this paper, we discuss a motion control of a twowheeled mobile robot. In the design of a controller for the system, a kinematic model is usually used; The wheels don’t skid at all and the mobile robot is regarded as a 3-dimensional 2-input nonholonomic system without drift. Many controllers based on the kinematic model have been proposed. However, in a real world, the wheels may skid on the ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2002
A V Anil Kumar S Yashonath Marcel Sluiter Yoshiyuki Kawazoe

Molecular dynamics simulation of a five-site model of methane within zeolite NaCaA and ab initio calculations have been reported. Methane shows a preferential orientation during its passage through the eight-ring window. Partial freezing of certain rotational degrees of freedom is observed during the passage of methane through the eight-ring window, which acts as a bottleneck for diffusion of m...

ABSRACTThis study presents the kinematic analysis of a four-degree freedom medical robotic arm using the Matlab and the robotic-tool, the arm was designed using a solid work program, As well as details of the control of the real design of this arm using Arduino Mega 2560, The specialist enters the position to be reached by the automatic arm (injection position), Or moving the arm to any p...

Journal: :Progress in brain research 2008
Bernhard J M Hess

Visual stabilization of the retina during rotational head movements requires that in far vision the eyes rotate about the same axis as the head but in opposite direction with a gain close to unity (optimal strategy). To achieve this goal the vestibulo-oculomotor system must be able to independently control all three rotational degrees of freedom of the eye. Studies of the human rotational vesti...

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