2013

= Spring 2013 = //Meet on every// Tuesday 8pm Pittsburgh time //unless noted otherwise.//

Classifying vortices in spin-orbit coupled spinor BECs
 * Jan 8, Zhifang Xu,**

Interacting bosons in an optical lattice in the presence of a synthetic gauge potential
 * Jan 13 (Sunday 9am Pittsburgh time), Kush Saha,** Department of Theoretical Physics, Indian Association for the Cultivation of Science, Kolkata, India.

Quantum spin liquids in the absence of spin rotation symmetry: An application to Herbertsmithite
 * Jan 14 (Monday 9:30am Pittsburgh time), Tyler Dodds**, University of Toronto


 * Jan 15** moved to Jan 16

"Excitonic Phases from Weyl Semi-Metals"
 * Jan 16 (7pm Pittsburgh time), Huazhou Wei,** University of California, Riverside

Heat equation approach to geometric changes of the torus Laughlin-state
 * Jan 22, Zhenyu Zhou**, Washington University in St. Louis

Edge States and Topological Phases in One-Dimensional Optical Superlattices
 * Jan 29, Lijun Lang**


 * Feb 5, no meeting** (Liu in NORDITA, Stockholm, Sweden)

Effect of the correlation energy in the normal state of a dipolar Fermi gas
 * Feb 12, Bo Liu**

Quantum phase dynamics of a spin-orbit coupled Bose-Einstein condensate
 * Feb 19, Jin-Long Yu**

Coexistence of Ferromagnetic and superconducting orders in the LAO/STO interface
 * Feb 26 meeting**, moved to **Feb 27 Wed 7pm** Pittsburgh time (Liu in a [|Symposium]in UT Dallas), **Xiaopeng Li**

Symmetry and Topology of BECs with Spin
 * March 5, Zhifang Xu**

Practice talk for APS march Meeting
 * March 12, Xiaopeng Li, Tuesday 8:30pm (pitt time)**

Majorana fermions and phase transitions in 1D superlattices
 * March 26, Lijun Lang, Tuesday 8:00pm (pitt time) (new shedule starting from this week) **

BEC-BCS Crossover of spin-1/2 sp-band Fermi gases in two dimensional optical lattice
 * April 2, Bo Liu, Tuesday 8:00pm (pitt time)**

Spin-dependent hexagonal lattices and related valley physics
 * April 9, Jin-Long Yu, Tuesday 8:00pm (pitt time)**

Quantum geometries---Berry curvature and Riemannian metric
 * April 16, Xiaopeng Li, Tuesday 8:00pm (pitt time)**

Adiabatic continuity between Hofstadter and Chern insulator states
 * April 23, Kai Sun, Tuesday 12:00pm-1:00pm (pitt time)**

Floquet theory and Floquet topological insulators
 * April 23, Lijun Lang, Tuesday 8:00pm (pitt time)**

p+ip superfluid state of spin-1/2 sp-band Fermi gases in two dimensional optical lattice
 * April 30, Bo Liu, Tuesday 8:00 pm (pitt time)**

Quantum geometric tensor and Quantum phase transition
 * May 7 Jin-Long Yu, Tuesday 8:00 pm (pitt time)**

Tuning Effective Hamiltonian: Unitary transformation
 * May 14 Zhifang Xu, Tuesday 8:00 pm (pitt time)**

Generic Magnetic phases with weak spin-orbital couplings
 * May 21 Xiaopeng Li, Tuesday 8:00 pm (pitt time)**

Try to find Floquet topological insulators
 * June 4, Lijun Lang, Tuesday 8:00 pm** **(pitt time)**

p+ip superfluid state of spin-1/2 sp-band Fermi gases in 2D spin-dependent optical lattice
 * June 11, Bo Liu, Tuesday 8:00 pm (rescheduled)**

p+ip superfluid state of spin-1/2 sp-band Fermi gases in 2D spin-dependent optical lattice
 * June 12, Bo Liu, Wed 8:00 pm**

Entanglement properties of interacting Kitaev's chain
 * June 19, Jin-Long Yu, Wed 8:00 pm**

Simulating spin-orbit coupling with orbitals.
 * June 25, Zhifang Xu, Tuesday 8:00 pm**

Topological Bosonic Mott Insulator
 * July 2, Jiyao Chen, Tuesday 8:00 pm**

In situ observation of strongly interacting ferromagnetic domains in a shaken optical lattice Ref: http://arxiv.org/abs/1305.5487
 * July 10, Xiaopeng Li, Wednesday 8:00 pm**

Periodic driving induced phase transition in 1D superlattices
 * July 16, Lijun Lang, Tuesday 8:00 pm**

Recent experimental progress in polar molecules Ref: arXiv:1305.5598
 * July 30, Bo Liu, Tuesday 8:00 pm**

Matrix product states for 1-d quantum chains
 * Aug 6, Jin-Long Yu, Tuesday 8:00 pm**

Spin-orbit-coupled dipolar quantum gases
 * Aug 13, Zhi-Fang Xu, Tuesday 8:00 pm**

Experimental realization of Hofstadter Hamiltonian with ultracold atoms in optical lattices Refs: arXiv: 1308.0321 (2013) by I. Bloch's group; arXiv 1308:1431(2013) by Ketterle's group
 * Aug 20, Xiaopeng Li, Tuesday 8:00 pm**

Moving and merging of Dirac points
 * Aug 27, Lijun Lang, Tuesday 8:00 pm**

Superconducting Vortex Lattices for Ultracold Atoms Ref: arXiv:1302.3504
 * Sep 3, Bo Liu, Tuesday 8:00 pm**

Searching for Topology in 2d Optical Lattices
 * Sep 10, Jin-Long Yu, Tuesday 8:00 pm**

Floquet Topological insulators
 * Sep 17, Zhenyu Zhou, Tuesday 8:00 pm**

Dynamical symmetry breaking in a shaking optical lattice
 * Sep 24, Zhifang Xu Tuesday 8:00pm**

Spin‐dependent lattice with spin‐orbit coupling
 * Oct 1, Jiyao Chen, Tuesday 8:00 pm**

Moving and merging of Dirac points in square lattices with \pi/2 flux
 * Oct 8, Li-Jun Lang, Tuesday 8:00 pm**

Dirac points with a Fermi gas in a tunable honeycomb lattice Ref: Nature 483, 302-305 (2012)
 * Oct 16, Bo Liu, Wed 8:00 pm** **(pitt time, rescheduled)**

Designing Artificial Magnetic Lattices
 * Oct 22,** **Jin-Long Yu****, Tuesday 8:00 pm** **(pitt time)**

Periodic Driving on Hofstadter Model
 * Oct 29,** **Zhenyu Zhou****, Tuesday 8:00 pm** **(pitt time)**

U.S.A Time Change in Fall
=// Meet on every // Tuesday 7pm Pittsburgh time ( Wed. 8:00 am Beijing time ) // unless noted otherwise. //=


 * Nov 5 move to **** Nov 7 ****, ** **Zhifang Xu****,** **Thursday 7:00 pm (pitt time)** **(**** cancelled, **** will be rescheduled later )**


 * Nov 12,** **Jiyao Chen****, Tuesday 7:00 pm** **(pitt time)**

Extracting the Chern number from the dynamics of a Fermi gas: Implementing a quantum Hall bar for cold atoms (Ref: A. Dauphin and N. Goldman, arXiv:1305.3872)
 * Nov 19,** **Li-Jun Lang****, Tuesday 7:00 pm** **(pitt time)**

Transport property in two-dimensional Bose gas Ref: arxiv:1306.4018
 * Nov 26,****Bo Liu,****Tuesday 7:00 pm** **(pitt time)**

Many faces of Wannier functions
 * Dec 3** ** move to **** Dec 5, ****Jin-Long Yu****,** **Thursday 7:00 pm (pitt time)** **(rescheduled)**


 * Dec 10,** **Zhenyu Zhou****,** **Tuesday 7:00 pm** **(pitt time)**


 * From Dec 16 to Jan 3, no group meeting.**