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Your search keyword '"Warrington, Neill C."' showing total 17 results
Start Over Author "Warrington, Neill C." Publisher american physical society (aps)
17 results on '"Warrington, Neill C."'

2. Complex paths around the sign problem

Author

Alexandru, Andrei, Basar, Gokce, Bedaque, Paulo F., and Warrington, Neill C.

Subjects
Nuclear Theory (nucl-th), High Energy Physics - Theory, Condensed Matter - Strongly Correlated Electrons, Quantum Physics, High Energy Physics - Lattice, Strongly Correlated Electrons (cond-mat.str-el), High Energy Physics - Theory (hep-th), Nuclear Theory, High Energy Physics - Lattice (hep-lat), FOS: Physical sciences, General Physics and Astronomy, Quantum Physics (quant-ph)
Abstract

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 physics to the correlated electron systems. However, many systems of great importance (dense matter inside neutron stars, the repulsive Hubbard model away from half-filling, dynamical and non-equilibrium observables) are not amenable to the Monte Carlo method as it currently stands due to the so-called "sign-problem". We review a new set of ideas recently developed to tackle the sign problem based on the complexification of field space and the Picard-Lefshetz theory accompanying it. The mathematical ideas underpinning this approach, as well as the algorithms so far developed, are described together with non-trivial examples where the method has already been proved successful. Directions of future work, including the burgeoning use of machine learning techniques, are delineated., 35 pages, 21 figures

Published
2022
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3. Path integral contour deformations for noisy observables

Author

Massachusetts Institute of Technology. Center for Theoretical Physics, Massachusetts Institute of Technology. Department of Physics, Detmold, William, Kanwar, Gurtej S., Wagman, Michael L, Warrington, Neill C., Massachusetts Institute of Technology. Center for Theoretical Physics, Massachusetts Institute of Technology. Department of Physics, Detmold, William, Kanwar, Gurtej S., Wagman, Michael L, and Warrington, Neill C.

Published
2022

4. Path integral contour deformations for observables in SU(N) gauge theory

Author

Massachusetts Institute of Technology. Center for Theoretical Physics, Massachusetts Institute of Technology. Department of Physics, Detmold, William, Kanwar, Gurtej, Lamm, Henry, Wagman, Michael L, Warrington, Neill C, Massachusetts Institute of Technology. Center for Theoretical Physics, Massachusetts Institute of Technology. Department of Physics, Detmold, William, Kanwar, Gurtej, Lamm, Henry, Wagman, Michael L, and Warrington, Neill C

Published
2022

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