Description
We demonstrate how dimensions of many-body systems influence the critical dynamical behaviors at quantum phase transition. We perform our experiment in a quasi-two-dimensional Bose-Hubbard model and do the improved band-mapping method to measure the quasi-momentum distribution. Based on these measurements, we obtain the components of coherent and incoherent parts in the mixture of superfluid and Mott insulators. This helps us to learn about the excitation defects due to the non-adiabaticity of quantum phase transitions. We observe a smooth crossover of critical scalings from two dimensions to three dimensions. To further quantitatively explain the phenomena, we apply quantum Monte Carlo calculations in an anisotropic Bose-Hubbard model.
| Presenter name | Qinpei Zheng |
|---|---|
| How will you attend ICAP-27? | I am planning on virtual registration for online attendance |
Primary authors
Qinpei Zheng
(School of Electronics, Peking University, Beijing 100871, China)
Yuqing Wang
(Department of Physics and State Key Laboratory of Low Dimensional Quantum Physics, Tsinghua University, Beijing, 100084, China)
Libo Liang
(School of Electronics, Peking University, Beijing 100871, China)
Qi Huang
(School of Electronics, Peking University, Beijing 100871, China)
Jingxin Sun
(School of Electronics, Peking University, Beijing 100871, China)
Ren Liao
(School of Electronics, Peking University, Beijing 100871, China)
Pengju Zhao
(School of Electronics, Peking University, Beijing 100871, China)
Jiazhong Hu
(Department of Physics and State Key Laboratory of Low Dimensional Quantum Physics, Tsinghua University, Beijing, 100084, China)
