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An optically driven microstructure for torque measurement in rotary molecular motors. [PDF]

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Spin angular momentum

2015
Abstract This chapter discusses the case of spin as an internal angular momentum-like degree of freedom. It considers and analyzes the case of spin-1/2 explicitly. It also discusses the coupling of spin to an externally applied magnetic field. Furthermore, it discusses rotations in the spin space.
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Spin and Orbital Angular Momentum of Photons

Europhysics Letters (EPL), 1994
We consider the separation of the total angular momentum of the electromagnetic field into a "spin" and an "orbital" part. Though this separation is normally considered to be unphysical and not observable, we argue that both members in the separation are separately measurable quantities.
S J van Enk, G Nienhuis
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Spin and Angular Momentum in General Relativity

Physical Review, 1953
In the general theory of relativity, the group of coordinate transformations gives rise to four point-to-point conservation laws, which are usually identified with energy and linear momentum. In the presence of a semiclassical Dirac field, it is convenient to introduce at each point of space-time an arbitrary set of four orthonormal vectors (quadrupeds,
Bergmann, Peter G., Thomson, Robb
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Angular Momentum and Spin

2013
Classically, angular momentum may be thought of as the Hamiltonian generator of rotations (Proposition 2.30). Angular momentum is a particularly useful concept when a system has rotational symmetry, since in that case the angular momentum is a conserved quantity (Proposition 2.18).
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Angular Momentum and Spin

2012
Determine the uncertainty relations between the orbital angular momentum \(\hat L = \left( {{{\hat L}_x},{{\hat L}_y},{{\hat L}_z}} \right)\) and the components of the position and of the momentum operators \(\hat r = \left( {\hat x,\hat y,\hat z} \right),\hat p = \left( {{{\hat p}_x},{{\hat p}_y},{{\hat p}_z}} \right)\).
Michele Cini   +2 more
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Spin and Angular Momentum

2019
In this chapter we put together everything we have studied so far—Mathematica, quantum mechanics, computational bases, units—to study simple quantum systems. We start our explorations of quantum mechanics with the description of angular momentum. The reason for this choice is that, in contrast to the mechanically more intuitive linear motion (Chap. 4),
openaire   +1 more source

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