期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.072002
关键词
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资金
- Office of Science of the U.S. Department of Energy
- U.S. Department of Energy Early Career Research Award [DE-SC0010495]
- joint City College of New York-RIKEN/Brookhaven Research Center fellowship
- CUNY
- U.S. National Science Foundation [PHY15-15738]
- U.S. Department of Energy (DOE) [DE-AC05-06OR23177]
- U.S. DOE Early Career Award [DE-SC0012180]
- Dean of Science Office at MIT
- Direct For Mathematical & Physical Scien
- Division Of Physics [1515738] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0012180] Funding Source: U.S. Department of Energy (DOE)
Standard methods for including electromagnetic interactions in lattice quantum chromodynamics calculations result in power-law finite-volume corrections to physical quantities. Removing these by extrapolation requires costly computations at multiple volumes. We introduce a photon mass to alternatively regulate the infrared, and rely on effective field theory to remove its unphysical effects. Electromagnetic modifications to the hadron spectrum are reliably estimated with a precision and cost comparable to conventional approaches that utilize multiple larger volumes. A significant overall cost advantage emerges when accounting for ensemble generation. The proposed method may benefit lattice calculations involving multiple charged hadrons, as well as quantum many-body computations with long-range Coulomb interactions.
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