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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

Interacting Bosons at Finite Angular Momentum Via Complex Langevin

Jul 27, 2018, 3:20 PM
20m
Big Ten A (Kellogg Hotel and Conference Center)

Big Ten A

Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Theoretical Developments Theoretical Developments

Speaker

Ms Casey Berger (University of North Carolina at Chapel Hill)

Description

Quantum field theories with a complex action suffer from a sign problem in stochastic non-perturbative treatments, making many systems of great interest - such as polarized or mass-imbalanced fermions and QCD at finite baryon density - extremely challenging to treat numerically. Another such system is that of bosons at finite angular momentum; experimentalists have successfully achieved vortex formation in supercooled bosonic atoms, and have measured quantities of interest such as the moment of inertia. However, the rotation results in a complex action, making the usual numerical treatments of the theory unusable. In this work, we use complex stochastic quantization, a method that has gained much attention in lattice QCD, to calculate basic properties of interacting bosons at finite angular momentum.

Primary author

Ms Casey Berger (University of North Carolina at Chapel Hill)

Co-author

Prof. Joaquin Drut (University of North Carolina at Chapel Hill)

Presentation Materials