Seminars & Lectures
| * TITLE | A unified approach to inelastic light scattering in Keldysh-Schwinger functional integral method | ||||||
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| * DATE / TIME | 2014-09-29, 13:30 | ||||||
| * PLACE | 512 Seminar Room, APCTP Headquarters, Pohnag | ||||||
| * ABSTRACT | |||||||
| We present a theoretical framework for the inelastic light scattering which treats non-resonant and resonant scattering on equal footing. This is made possible owing to Keldysh-Schwinger functional integral method, which expresses light scattering cross-section directly in the form of correlation function without involving a sum over intermediate states as in the case of Kramers-Heisenberg formula. The correlation function can be then computed by the technique of quantum field theory. Applications to Raman scattering of graphene and two-magnon scattering of antiferromagnetic insulators are discussed. |
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