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Particle number operator

Known as: Number operator, Particle number operators 
In quantum mechanics, for systems where the total number of particles may not be preserved, the number operator is the observable that counts the… 
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Papers overview

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2017
2017
The state space of a generic string bit model is spanned by $N\ifmmode\times\else\texttimes\fi{}N$ matrix creation operators… 
2014
2014
Optical amplification in a population-inverted medium is quantum-mechanically described, using the Heisenberg picture. Unlike… 
2010
2010
It is shown that the square of the Dirac Hamiltonian with the isotropic mass-hedgehog potential in d dimensions is the number… 
2009
2009
We address generalized measurements of linear multimode operators and discuss some aspects relevant to constructing angle… 
1994
1994
The question of phase measurement for a quantum oscillator using the quantum non-demolition principle (NDP), which does not need… 
1992
1992
Quantum algebras [1, 2] have recently attracted a lot of attention in physics. In particular, the realization of the quantum… 
1980
1980
Within the framework of the interacting boson approximation, simple analytical formulae are presented for analysing the mass… 
1980
1980
When the phase of the transmittance between a unimodal transmitter and a unimodal receiver is uniformly distributed over (0,2\pi…