Polaron in t-J model

Abstract

We present numeric results for ground state and angle resolved photoemission spectra (ARPES) for single hole in t-J model coupled to optical phonons. The systematic-error free diagrammatic Monte Carlo is employed where the Feynman graphs for the Matsubara Green function in imaginary time are summed up completely with respect to phonons variables, while magnetic variables are subjected to non-crossing approximation. We obtain that at electron-phonon coupling constants relevant for high Tc cuprates the polaron undergoes self-trapping crossover to strong coupling limit and theoretical ARPES demonstrate features observed in experiment: a broad peak in the bottom of the spectra has momentum dependence which coincides with that of hole in pure t-J model.

4 pages, 4 figures

References in corpus (14)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Correlated Electrons in High Temperature Superconductors
• Polaron Problem by Diagrammatic Quantum Monte Carlo
• Angle-resolved photoemission in high Tc cuprates from theoretical viewpoints
• Single hole dynamics in the t-J model on a square lattice
• Oxygen isotope effect on the in-plane penetration depth in underdoped La_{2-x}Sr_{x}CuO_{4} single crystals
• Single hole spectral function and spin-charge separation in the t-J model
• Optical absorption and single-particle excitations in the 2D Holstein t-J model
• Quasiparticle energy dispersion in doped two dimensional quantum antiferromagnets
• Dispersion of a single hole in the t-J model
• Theory for Slightly Doped Antiferromagnetic Mott Insulators
• Self-Trapping of Polarons in the Rashba-Pekar Model
• Quasi-degenerate self-trapping in one-dimensional charge transfer exciton
• Spectral properties of the t-J model in the presence of hole-phonon interaction

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