Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session K34: Precision Many Body Physics II
8:00 AM–10:48 AM,
Wednesday, March 7, 2018
LACC Room: 409A
Sponsoring Units: DCOMP DAMOP DCMP
Chair: Yuan Huang, Univ of Mass - Amherst
Abstract: K34.00010 : Strongly-interacting rotating bosons via complex stochastic quantization*
10:12 AM–10:24 AM
(Univ of NC - Chapel Hill)
Quantum field theories with a complex action suffer from a sign problem in stochastic nonperturbative treatments, making many systems of great interest - such as polarized or mass-imbalanced fermions and quantum chromodynamics (QCD) at finite baryon density - extremely challenging to treat numerically. Another such system is that of multiple 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 circumvent the sign problem and calculate basic properties of rotating bosons with strong interactions.
*This work is supported by the NSF under Grants No. PHY1452635 (Computational Physics Program) and the Department of Energy Computational Science Graduate Fellowship Program under contract DE-FG02-97ER25308.
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