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ResearchHub is incentivizing healthy research behavior. At this time, first authors of open access papers are eligible for rewards. Visit the publications tab to view your eligible publications.
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Cathy Lloyd
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Anomalous Levy decoherence
Robert H. Schneider
et al.
Jul 16, 2001
We investigate the decoherence of a small quantum system weakly coupled to acomplex, chaotic environment when the dynamics is not Gaussian but Levyanomalous. By studying the time dependence of the linear entropy and thedamping of the interference of two Gaussian wave packets in the Wignerrepresentation, we show that the decoherence time for a quantum Levy stableprocess is always smaller than for Gaussian diffusion.
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Group Theoretical Quantization of Schwarzschild and Taub-NUT
Ahmed Senouci
et al.
Sep 24, 1996
Stationary spherically symmetric gravity is equivalent to a nonlinear cosetsigma model on SL(2,R)/SO(2) coupled to a gravitational remnant. Classicallythere are stationary solutions besides the static Schwarzschild metric labeledby the Schwarzschild mass $m$ and the Taub-NUT charge $l$. Imposing the SL(2,R)symmetry at the quantum level the Wheeler-DeWitt equation becomes related tothe Casimir operator on the coset, which makes the system amenable to exactquantization.
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The $\pi\gamma$ transition form factor and the pion wave function
Ahmed Senouci
et al.
May 9, 1996
The pion wave function is discussed in the light of the recent CLEO data onthe pion gamma transition form factor. It turns out that the wave function isclose to the asymptotic form whereas wave functions strongly concentrated inthe end-point regions are disfavoured. Consequences for other exclusivequantities, as for instance the pion's electromagnetic form factor, are alsodiscussed.
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Numerical Computations of Separability Probabilities
Stephen Puntis
et al.
Sep 6, 2014
We compute the probability that a bipartite quantum state is separable byMonte Carlo sampling. This is carried out for rebits, qubits and quaterbits. Wesampled $5\times 10^{11}$ points for each of these three cases. The resultsstrongly support conjectures for certain rational values of these probabilitiesthat have been found by other methods.
Quantum Mechanics
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Quantum Mechanics
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The coisotropic subgroup structure of SL_q(2,R)
Petra Boynton
et al.
Jul 8, 1999
We study the coisotropic subgroup structure of standard SL_q(2,R) and thecorresponding embeddable quantum homogeneous spaces. While the subgroups S^1and R_+ survive undeformed in the quantization as coalgebras, we show that R isdeformed to a family of quantum coisotropic subgroups whose coalgebra can notbe extended to an Hopf algebra. We explicitly describe the quantum homogeneousspaces and their double cosets.
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