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- HUN-REN Alfréd Rényi Institute of MathematicsHU27 papers
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14 papers · 1 filter
The highest redshift radio quasar as seen with the EVN and the VLA
S. Frey, Z. Paragi, L. Mosoni +1
We report on European VLBI Network (EVN) and Very Large Array (VLA) observations of SDSS J0836+0054, the most distant radio-loud quasar known at present z=5.774). The source, with…
Dissipation-induced quantum phase transition in a quantum box
L. Borda, G. Zarand, P. Simon
In a recent work, Le Hur has shown that dissipative coupling to gate electrodes may play an important role in a quantum box near its degeneracy point [K. Le Hur, Phys. Rev. Lett. {…
Bose-Einstein or HBT correlations and the anomalous dimension of QCD
T. Csorgo, S. Hegyi, T. Novak +1
Bose-Einstein (or HBT) correlation functions are evaluated for the fractal structure of QCD jets. These correlation functions have a stretched exponential (or Levy-stable) form. Th…
Equivalence of Bose-Einstein condensation and symmetry breaking
Andras Suto
Based on a classic paper by Ginibre [Commun. Math. Phys. {\bf 8} 26 (1968)] it is shown that whenever Bogoliubov's approximation, that is, the replacement of a_0 and a_0^* by compl…
A computable measure of nonclassicality for light
J. K. Asbóth, J. Calsamiglia, H. Ritsch
We propose the Entanglement Potential (EP) as a measure of nonclassicality for quantum states of a single-mode electromagnetic field. It is the amount of two-mode entanglement that…
On a multivariate version of Bernstein's inequality
P. Major
We prove a multivariate version of Bernstein's inequality about the probability that degenerate -statistics take a value larger than some number . This is an improvement of f…