Dynamical instabilities and transient short-range order in the fermionic Hubbard model
Dynamical instabilities and transient short-range order in the fermionic Hubbard model
复制标题
费米子哈伯德模型中的动态不稳定性和瞬态短程有序
DOI:
10.1103/physrevb.92.024305
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发表时间:
2015
影响因子:
3.7
通讯作者:
E Demler
中科院分区:
文献类型:
--
作者:
J Bauer;M Babadi;E Demler
We study the dynamics of magnetic correlations in the half-filled fermionic Hubbard model following a fast ramp of the repulsive interaction. We use Schwinger-Keldysh self-consistent second-order perturbation theory to investigate the evolution of single-particle Green's functions and solve the nonequilibrium Bethe-Salpeter equation to study the dynamics of magnetic correlations. This approach gives us new insights into the interplay between single-particle relaxation dynamics and the growth of antiferromagnetic correlations. Depending on the ramping time and the final value of the interaction, we find different dynamical behavior which we illustrate using a dynamical phase diagram. Of particular interest is the emergence of a transient short-range ordered regime characterized by the strong initial growth of antiferromagnetic correlations followed by a decay of correlations upon thermalization. The discussed phenomena can be probed in experiments with ultracold atoms in optical lattices.
影响因子:
56.9
作者:
V. Gates;.. M. L. Ludwig-M.-L.-Ludwig-2273875465;J. A. Hartsuck;T. A. Steitz;H. Muirhead;J. C. Coppola;G. N. Reeke
通讯作者:
V. Gates;.. M. L. Ludwig-M.-L.-Ludwig-2273875465;J. A. Hartsuck;T. A. Steitz;H. Muirhead;J. C. Coppola;G. N. Reeke
DOI:
10.1136/ebmh.11.4.102
发表时间:
2008-10
期刊:
Evidence Based Mental Health
影响因子:
--
作者:
P. Cochat;L. Vaucoret;J. Sarles
通讯作者:
P. Cochat;L. Vaucoret;J. Sarles