Non-Hermitian adiabatic transport in spaces of exceptional points
Non-Hermitian adiabatic transport in spaces of exceptional points
复制标题
特异点空间中的非厄米绝热输运
DOI:
10.1103/physreva.102.032216
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发表时间:
2020
影响因子:
2.9
通讯作者:
Harris, J. G.
中科院分区:
文献类型:
--
作者:
Höller, J.;Read, N.;Harris, J. G.
We consider the space ofnon-Hermitian Hamiltonians (, 3, ...) that are equivalent to a singleJordan block. We focus on adiabatic transport around a closed path (i.e., a loop)withinthis space, in the limit as the time scale T=1/ɛ taken to traverse the loop tends to infinity. We show that, for a certain class of loops and a choice of initial state, the state returns to itself and acquires a complex phase that is ɛ−1 times an expansion in powers of ɛ1/n. The exponential of the term oforder (which is equivalent to the “geometric” or Berry phase modulo) is thus independent of ɛ as ɛ→0; it depends only on the homotopy class of the loop and is an integer power of. One of the conditions under which these results hold is that the state being transported is, for all points on the loop, that of slowest decay.
影响因子:
1.8
作者:
C. Miniatura;C. Sire;J. Baudon;J. Bellissard
通讯作者:
J. Bellissard
影响因子:
3
作者:
D. Freed;G. Moore;G. Segal
通讯作者:
G. Segal
DOI:
10.1088/0305-4470/37/31/012
发表时间:
2003-12
期刊:
Journal of Physics A
影响因子:
--
作者:
T. Stehmann;W D Heiss;F G Scholtz
通讯作者:
T. Stehmann;W D Heiss;F G Scholtz