Dynamics of a spin-boson model with structured spectral density
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Dosyalar
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We report the results of a study of the dynamics of a two-state system coupled to an environment with peaked spectral density. An exact analytical expression for the bath correlation function is obtained. Validity range of various approximations to the correlation function for calculating the population difference of the system is discussed as function of tunneling splitting, oscillator frequency, coupling constant, damping rate and the temperature of the bath. An exact expression for the population difference, for a limited range of parameters, is derived. (C) 2018 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Structured Spectral Density, Spin-Boson Model, Bath Correlation Functions
Kaynak
Physics Letters A
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
382
Sayı
19
