Efficient Time-Domain Approach for Linear Response Functions
نویسندگان
چکیده
We derive the general Kubo formula in a form that solely utilizes time evolution of displacement operators. The derivation is based on decomposition linear response function into its symmetric and anti-symmetric part. relate this to well-known fluctuation-dissipation discuss theoretical numerical aspects it. approach illustrated with an analytical example for magnetic resonance as well where we analyze electrical conductivity tensor Chern insulating state disordered Haldane model. introduce highly efficient time-domain describes quantum dynamics resistivity model at least 1000-fold better performance comparison existing time-evolution schemes.
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2021
ISSN: ['1079-7114', '0031-9007', '1092-0145']
DOI: https://doi.org/10.1103/physrevlett.127.016601