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20022005
most citedDetermination of the exchange energies in Li2VOSiO4 from a high-temperature series analysis of the square lattice J1-J2 Heisenberg model

40 citations

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math-ph2005★ 7 cited

The quantum fidelity for the time-dependent singular quantum oscillator

M. Combescure

In this paper we perform an exact study of ``Quantum Fidelity'' (also called Loschmidt Echo) for the time-periodic quantum Harmonic Oscillator of Hamiltonian : $$ \hat H\_{g}(t):=\…