168 citations · 2.2k across the 51 of their papers we have counts for
9 papers · 1 filter
Sign optimization and complex saddle points in one-dimensional QCD
Gokce Basar, Joesph Marincel
We study one-dimensional QCD at finite quark density by using the sign optimization framework. The fermion sign problem is mitigated by deforming the path integral domain, …
Complex Paths Around The Sign Problem
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +1
The Monte Carlo evaluation of path integrals is one of a few general purpose methods to approach strongly coupled systems. It is used in all branches of Physics, from QCD/nuclear p…
Finite Density Near Lefschetz Thimbles
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +2
One strategy for reducing the sign problem in finite-density field theories is to deform the path integral contour from real to complex fields. If the deformed manifold is the appr…
Schwinger-Keldysh on the lattice: a faster algorithm and its application to field theory
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +1
A new algorithm is developed allowing the Monte Carlo study of a 1 + 1 dimensional theory in real time. The main algorithmic development is to avoid the explicit calculation of the…
Monte Carlo study of real time dynamics
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +2
Monte Carlo studies involving real time dynamics are severely restricted by the sign problem that emerges from highly oscillatory phase of the path integral. In this letter, we pre…
A study of symmetry breaking in a relativistic Bose gas using the contraction algorithm
Andrei Alexandru, Gokce Basar, Paulo Bedaque +2
A relativistic Bose gas at finite density suffers from a sign problem that makes direct numerical simulations not feasible. One possible solution to the sign problem is to re-expre…