New algorithms and new results for strong coupling LQCD
- We present and compare new types of algorithms for lattice QCD with staggered fermions in the limit of infinite gauge coupling. These algorithms are formulated on a discrete spatial lattice but with continuous Euclidean time. They make use of the exact Hamiltonian, with the inverse temperature beta as the only input parameter. This formulation turns out to be analogous to that of a quantum spin system. The sign problem is completely absent, at zero and non-zero baryon density. We compare the performance of a continuous-time worm algorithm and of a Stochastic Series Expansion algorithm (SSE), which operates on equivalence classes of time-ordered interactions. Finally, we apply the SSE algorithm to a first exploratory study of two-flavor strong coupling lattice QCD, which is manageable in the Hamiltonian formulation because the sign problem can be controlled.
| Author: | Wolfgang UngerORCiDGND, Philippe de ForcrandGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-274453 |
| ISSN: | 1824-8039 |
| ArXiv Id: | http://arxiv.org/abs/1211.7322 |
| Parent Title (English): | Proceedings of Science |
| Publisher: | Scuola Internazionale Superiore di Studi Avanzati |
| Place of publication: | Trieste |
| Document Type: | Conference Proceeding |
| Language: | English |
| Year of Completion: | 2012 |
| Year of first Publication: | 2012 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2012/12/14 |
| Volume: | 2012 |
| First Page: | 1 |
| Note: | The 30 International Symposium on Lattice Field Theory - Lattice 2012, June 24-29, 2012 Cairns, Australia |
| HeBIS-PPN: | 416425305 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen |
