Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 65: Quantum-Critical Phenomena II

TT 65.5: Vortrag

Mittwoch, 14. März 2018, 16:00–16:15, HFT-FT 131

Spin and valence bond dynamics across a deconfined quantum critical point in a fermionic SU(3) model — •Zhenjiu Wang¹, Hui Shao², and Fakher.f Assaad¹ — ¹Institut for Theoretische Physik und Astrophysik, University Wuerzburg, Am Hubland, D-97074 Wuerzburg, Germany — ²Beijing Computational Science Research Center, Beijing 100193, China

We consider a model of SU(3) fermions coupled to a transverse Ising field that harbors deconfined phases and phase transitions between antiferromagnetic (AFM) and valence bond solid (VBS) states [1]. Here, we supplement the model with a flux term and use the auxiliary field quantum Monte Carlo algorithm to and map out the phase diagram in the transverse field and flux plane. Special emphasis is placed on the VBS and AFM dynamics across the phase transition. An improved stochastic analytic continuation method reveals a spinon-continuum in the proximity of the DQCP.