- Tytuł:
- On the imaginary part of coupling resonance points
- Autorzy:
-
Azamov, Nurulla
Daniels, Tom - Powiązania:
- https://bibliotekanauki.pl/articles/255376.pdf
- Data publikacji:
- 2019
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
scattering matrix
scattering phase
resonance point
Breit-Wigner formula - Opis:
- We prove for rank one perturbations that the imaginary part of a coupling resonance point is inversely proportional by a factor of —2 to the rate of change of the scattering phase, as a function of the coupling variable, evaluated at the real part of the resonance point. This equality is analogous to the Breit-Wigner formula from quantum scattering theory. For more general relatively trace class perturbations, we also give a formula for the spectral shift function in terms of coupling resonance points, non-real and real.
- Źródło:
-
Opuscula Mathematica; 2019, 39, 5; 611-621
1232-9274
2300-6919 - Pojawia się w:
- Opuscula Mathematica
- Dostawca treści:
- Biblioteka Nauki
Artykuł