[institut] SCL seminar: Many-site coherence revivals, Bo Xiong, petak, 28. jun u 14:00

[Antun Balaz]

Поштоване колегинице и колеге,

Позивам вас да у петак, 28. јуна 2013. године дођете на SCL семинар који ће са почетком у 14 часова у сали "Звонко Марић" Института за физику одржати dr Bo Xiong (SCL, Институт ѕа физику у Беграду). Назив семинара је:

Many-site coherence revivals and correlated supersolid states in optical lattices with long-range interactions

Abstract:

We investigate the impact of long-range interactions (e.g., dipole-dipole interaction) in optical lattices on the dynamics of many-body waves when initial coherent states and supersolid states are quenched toward localized states. For initial coherent states, the exactly attenuated collapse and revival oscillations are unlikely to be captured by the conventional Gutzwiller treatment. We provide a modified variant of the Gutzwiller ansatz, reproducing the analytically calculated time dependence of first-order coherence in the limit of zero tunneling [1]. For initial supersolid states, unique coherence oscillation between the even and odd sublattice sites of the checkerboard are created by the quench, which are absent when the initial state is described by a Gutzwiller product state. This opens up the possibility to discriminate experimentally between mean-field and many-body origins of supersolidity [2].

[1] U. R. Fischer and B. Xiong, Phys. Rev. A 84, 063635 (2011).
[2] U. R. Fischer and B. Xiong, Europhys. Lett. 99, 66003 (2012).


Срдачан поздрав,
Антун Балаж

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Antun Balaz
E-mail: antun at ipb.ac.rs
Web: http://www.scl.rs/

Phone: +381 11 3713152
Fax: +381 11 3162190

Scientific Computing Laboratory
Institute of Physics Belgrade
Pregrevica 118, 11080 Belgrade, Serbia
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