Finite density QED1+1 near Lefschetz thimbles
| Autor: | Henry Lamm, Paulo F. Bedaque, Andrei Alexandru, Scott Lawrence, Gökçe Başar |
|---|---|
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Physical Review D. 98 |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.98.034506 |
| Popis: | 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 appropriate combination of Lefschetz thimbles---or somewhat close to them---the sign problem is alleviated. Gauge theories require generalizing the definition of thimble decompositions, and therefore it is unclear how to carry out a generalized thimble method. In this paper we discuss some of the conceptual issues involved by applying this method to ${\mathrm{QED}}_{1+1}$ at finite density, showing that the generalized thimble method yields correct results with less computational effort than standard methods. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|