15 citations · 39 across the 4 of their papers we have counts for
3 papers · 1 filter
Loschmidt echo in many-spin systems: contrasting time-scales of local and global measurements
Pablo R. Zangara, Denise Bendersky, Patricia R. Levstein +1
A local excitation in a quantum many-spin system evolves deterministically. A time-reversal procedure, involving the inversion of the signs of every energy and interaction, should…
Proliferation of effective interactions: decoherence-induced equilibration in a closed many-body system
Pablo R. Zangara, Denise Bendersky, Horacio M. Pastawski
We address the question on how weak perturbations, that are quite ineffective in small many-body systems, can lead to decoherence and hence to irreversibility when they proliferate…
Fragility of superposition states evaluated by the Loschmidt Echo
Denise Bendersky, Pablo R. Zangara, Horacio M. Pastawski
We consider the degradation of the dynamics of a Gaussian wave packet in a harmonic oscillator under the presence of an environment. This last is given by a single non-degenerate t…