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Updated: May 18, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Quasiparticle dynamics in a bose insulator probed by interband bragg spectroscopy
N Fabbri1, S D Huber, D Clément
1LENS, Dipartimento di Fisica e Astronomia, Università di Firenze, Sesto Fiorentino, Italy. fabbri@lens.unifi.it
Abstract:
We investigate experimentally and theoretically the dynamical properties of a Mott insulator in decoupled one-dimensional chains. Using a theoretical analysis of the Bragg excitation scheme, we show that the spectrum of interband transitions holds information on the single-particle Green's function of the insulator. In particular, the existence of particle-hole coherence due to quantum fluctuations in the Mott state is clearly seen in the Bragg spectra and quantified. Finally, we propose a scheme to directly measure the full, momentum-resolved spectral function as obtained in the angle-resolved photoemission spectroscopy of solids.
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