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The log of a quantum state and qubit local unitary invariants
log quantum state qubit local unitary invariants
2010/10/19
Local unitary invariants of multipartite states fall into families related by the tracing-out of subsystems. In the case of pure qubit systems, there is a family that accounts for about half the total...
Fitting the Log Periodic Power Law to financial crashes: a critical analysis
Log Periodic Power Law financial crashes critical analysis
2010/4/27
A number of papers claim that a Log Periodic Power Law (LPPL) fitted to financial market bubbles that precede large market falls or 'crashes', contain parameters that are confined within certain range...
On Classical Analogs of Quantum Schwarzschild and Reissner-Nordstrom Black Holes. Solving the "Mystery of log(3)"
Black Holes Quantum Schwarzschild
2010/3/18
The model is built in which the main global properties of classical and quasi-classical black holes become local. These are the event horizon, "no-hair", temperature and entropy. Our construction is b...
Efficient factorization with a single pure qubit and $log N$ mixed qubits
Efficient factorization single pure qubit $log N$ mixed qubits
2010/10/15
We suggest a tunable optical device to synthesize Fock states and their superpositions starting
from a coherent source. The scheme involves an avalanche triggering photodetector and a ring
cavity co...