[Aspuru-Guzik group list] ITAMP topical lunch discussion: Friday, January 31 @ 12:00

ITAMP Topical Lunch Discussion Date: FRIDAY, January 31 Time: 12:00-1:30 pm Pizza will be served. Location: B-106 @ Center for Astrophysics (60 Garden Street) Directions: after entering the lobby of the CfA, turn right to enter the hallway of the B building. In the hallway, turn right again, and B-106 is there. Speaker: Arghavan Safavi (MIT) Title: Using Worm algorithm to study many body physics of dipoles in layered geometries Abstract: The experimental success of trapping polar molecules and atoms with magnetic dipolar moments allows us to study many body systems where dipole-dipole interactions are significant. In this talk I will introduce path integral Quantum Monte Carlo, using the Worm algorithm, and use it to study the ground state phase diagram of dipolar bosons in a two-dimensional lattice. I will then describe how the Worm algorithm can be modified to study pairing in a bilayer geometry. This extension to the Worm algorithm allows us to study the many body phases of these pairs. Finally I will describe the multiworm algorithm, which allows for the efficient study of chain formation in multilayered geometries. I will show how one can use this algorithm, in addition to analytical techniques such as bosonization, to study the physics of a stack of one-dimensional tubes of dipolar bosons.