132 citations · 671 across the 23 of their papers we have counts for
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Path integral contour deformations for observables in gauge theory
William Detmold, Gurtej Kanwar, Henry Lamm +2
Path integral contour deformations have been shown to mitigate sign and signal-to-noise problems associated with phase fluctuations in lattice field theories. We define a family of…
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…
Path integral contour deformations for noisy observables
William Detmold, Gurtej Kanwar, Michael L. Wagman +1
Monte Carlo studies of many quantum systems face exponentially severe signal-to-noise problems. We show that noise arising from complex phase fluctuations of observables can be red…
Gluon Field Digitization for Quantum Computers
Andrei Alexandru, Paulo F. Bedaque, Siddhartha Harmalkar +3
Simulations of gauge theories on quantum computers require the digitization of continuous field variables. Digitization schemes that uses the minimum amount of qubits are desirable…
Fermions at Finite Density in (2+1)d with Sign-Optimized Manifolds
Andrei Alexandru, Paulo F. Bedaque, Henry Lamm +2
We present Monte Carlo calculations of the thermodynamics of the (2+1) dimensional Thirring model at finite density. We bypass the sign problem by deforming the domain of integrati…
Spin Polarized Non-Relativistic Fermions in 1+1 Dimensions
Andrei Alexandru, Paulo F. Bedaque, Neill C. Warrington
We study by Monte Carlo methods the thermodynamics of a spin polarized gas of non-relativistic fermions in 1+1 dimensions. The main result of this work is that our action suffers n…
A complex path around the sign problem
Paulo F. Bedaque
We review recent attempts at dealing with the sign problem in Monte Carlo calculations by deforming the region of integration in the path integral from real to complex fields. We d…
Tempered transitions between thimbles
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +1
Quantum field theories with complex actions cannot be investigated using importance sampling due to the sign problem. One possible solution is to use the holomorphic gradient flow,…
Monte Carlo calculations of the finite density Thirring model
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +2
We present results of the numerical simulation of the two-dimensional Thirring model at finite density and temperature. The severe sign problem is dealt with by deforming the domai…
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…
Fast Estimator of jacobians in Monte Carlo Integration on Lefschetz Thimbles
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +2
A solution to the sign problem is the so-called "Lefschetz thimble approach" where the domain of integration for field variables in the path integral is deformed from the real axis…
Sign problem and Monte Carlo calculations beyond Lefschetz thimbles
Andrei Alexandru, Gokce Basar, Paulo F. Bedaque +2
We point out that Monte Carlo simulations of theories with severe sign problems can be profitably performed over manifolds in complex space different from the one with fixed imagin…