Massive photons: An infrared regularization scheme for lattice $\mathrm{QCD}+\mathrm{QED}$
Abstract
Standard methods for including electromagnetic interactions in lattice quantum chromodynamics calculations result in powerlaw finitevolume 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 manybody computations with longrange Coulomb interactions.
 Authors:

 Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
 Forschungszentrum Julich, Julich (Germany)
 The City College of New York, New York, NY (United States); The City Univ. of New York, New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
 College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
 Publication Date:
 Research Org.:
 Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), Nuclear Physics (NP)
 OSTI Identifier:
 1313754
 Alternate Identifier(s):
 OSTI ID: 1288988; OSTI ID: 1379556
 Report Number(s):
 JLABTHY152112; DOE/OR/231773477; arXiv:1507.08916
Journal ID: ISSN 00319007; PRLTAO
 Grant/Contract Number:
 SC0010495; AC0506OR23177; SC0012180; PHY1515738; AC0205CH11231
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physical Review Letters
 Additional Journal Information:
 Journal Volume: 117; Journal Issue: 7; Journal ID: ISSN 00319007
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Endres, Michael G., Shindler, Andrea, Tiburzi, Brian C., and WalkerLoud, Andre. Massive photons: An infrared regularization scheme for lattice QCD+QED. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.117.072002.
Endres, Michael G., Shindler, Andrea, Tiburzi, Brian C., & WalkerLoud, Andre. Massive photons: An infrared regularization scheme for lattice QCD+QED. United States. https://doi.org/10.1103/PhysRevLett.117.072002
Endres, Michael G., Shindler, Andrea, Tiburzi, Brian C., and WalkerLoud, Andre. Wed .
"Massive photons: An infrared regularization scheme for lattice QCD+QED". United States. https://doi.org/10.1103/PhysRevLett.117.072002. https://www.osti.gov/servlets/purl/1313754.
@article{osti_1313754,
title = {Massive photons: An infrared regularization scheme for lattice QCD+QED},
author = {Endres, Michael G. and Shindler, Andrea and Tiburzi, Brian C. and WalkerLoud, Andre},
abstractNote = {Standard methods for including electromagnetic interactions in lattice quantum chromodynamics calculations result in powerlaw finitevolume 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 manybody computations with longrange Coulomb interactions.},
doi = {10.1103/PhysRevLett.117.072002},
journal = {Physical Review Letters},
number = 7,
volume = 117,
place = {United States},
year = {2016},
month = {8}
}
Web of Science
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