3 papers
quant-ph2014
Complex Hadamard matrices for prime number
Petre Diţă
In this paper we disprove the Haagerup statement that all complex Hadamard matrices of order five are equivalent with the Fourier matrix by constructing circulant matrices th…
quant-ph1998
Poisson-Lie Structures and Quantisation with Constraints
Petre Diţă
We develop here a simple quantisation formalism that make use of Lie algebra properties of the Poisson bracket. When the brackets and , where is the Ha…
hep-th1997
Quantization of the Particle Motion on the -Dimensional Sphere
Petre Diţă
We develop here a simple formalism that converts the second-class constraints into first-class ones for a particle moving on the -dimensional sphere. The Poisson algebra generat…