Initial stage of quasiparticle decay in fermionic systems
نویسندگان
چکیده
منابع مشابه
Initial stage of quasiparticle decay in fermionic systems
Generally, the addition or removal of a single particle in a many-body system does not correspond to an exact eigenstate of the system. Thus the resulting coherent excitation evolves in time. As discussed here, the evolution at short times upon the excitation with the energy exhibits a quadratic decay [with the rate constant σ 2( )]. Later on, after some time τ ( ), the exponential decay sets i...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2013
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.87.125101