Statistics of orthogonality catastrophe events in localised disordered lattices
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DOI: 10.1088/1367-2630/aad10b
Abstract: We address the phenomenon of statistical orthogonality catastrophe in insulating disordered systems. More in detail, we analyse the response of a system of non-interacting fermions to a local perturbation induced by an impurity. By inspecting… read more here.
Keywords: localised disordered; events localised; catastrophe events; orthogonality catastrophe ... See more keywords
Time Scale for Adiabaticity Breakdown in Driven Many-Body Systems and Orthogonality Catastrophe.
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DOI: 10.1103/physrevlett.119.200401
Abstract: The adiabatic theorem is a fundamental result in quantum mechanics, which states that a system can be kept arbitrarily close to the instantaneous ground state of its Hamiltonian if the latter varies in time slowly… read more here.
Keywords: many body; orthogonality catastrophe; time; time scale ... See more keywords
Orthogonality Catastrophe in Dissipative Quantum Many-Body Systems.
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DOI: 10.1103/physrevlett.122.040604
Abstract: We present an analog of the phenomenon of orthogonality catastrophe in quantum many-body systems subject to a local dissipative impurity. We show that the fidelity F(t), giving a measure for distance of the time-evolved state… read more here.
Keywords: orthogonality catastrophe; many body; body systems; quantum many ... See more keywords