Proton–proton fusion in lattice effective field theory

The proton–proton fusion rate is calculated at low energy in a lattice effective field theory (EFT) formulation. The strong and the Coulomb interactions are treated non-perturbatively at leading order in the EFT. The lattice results are shown to accurately describe the low energy cross section withi...

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Main Authors: Gautam Rupak, Pranaam Ravi
Format: Article
Language:English
Published: Elsevier 2015-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269314009368
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author Gautam Rupak
Pranaam Ravi
author_facet Gautam Rupak
Pranaam Ravi
author_sort Gautam Rupak
collection DOAJ
description The proton–proton fusion rate is calculated at low energy in a lattice effective field theory (EFT) formulation. The strong and the Coulomb interactions are treated non-perturbatively at leading order in the EFT. The lattice results are shown to accurately describe the low energy cross section within the validity of the theory at energies relevant to solar physics. In prior works in the literature, Coulomb effects were generally not included in non-perturbative lattice calculations. Work presented here is of general interest in nuclear lattice EFT calculations that involve Coulomb effects at low energy. It complements recent developments of the adiabatic projection method for lattice calculations of nuclear reactions.
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spelling doaj.art-941c2580affc416bb15213e01e381cf32022-12-22T03:49:15ZengElsevierPhysics Letters B0370-26932015-02-01741301304Proton–proton fusion in lattice effective field theoryGautam Rupak0Pranaam Ravi1Department of Physics & Astronomy and HPC2 Center for Computational Sciences, Mississippi State University, MS 39762, USADepartment of Physics & Astronomy and HPC2 Center for Computational Sciences, Mississippi State University, MS 39762, USAThe proton–proton fusion rate is calculated at low energy in a lattice effective field theory (EFT) formulation. The strong and the Coulomb interactions are treated non-perturbatively at leading order in the EFT. The lattice results are shown to accurately describe the low energy cross section within the validity of the theory at energies relevant to solar physics. In prior works in the literature, Coulomb effects were generally not included in non-perturbative lattice calculations. Work presented here is of general interest in nuclear lattice EFT calculations that involve Coulomb effects at low energy. It complements recent developments of the adiabatic projection method for lattice calculations of nuclear reactions.http://www.sciencedirect.com/science/article/pii/S0370269314009368
spellingShingle Gautam Rupak
Pranaam Ravi
Proton–proton fusion in lattice effective field theory
Physics Letters B
title Proton–proton fusion in lattice effective field theory
title_full Proton–proton fusion in lattice effective field theory
title_fullStr Proton–proton fusion in lattice effective field theory
title_full_unstemmed Proton–proton fusion in lattice effective field theory
title_short Proton–proton fusion in lattice effective field theory
title_sort proton proton fusion in lattice effective field theory
url http://www.sciencedirect.com/science/article/pii/S0370269314009368
work_keys_str_mv AT gautamrupak protonprotonfusioninlatticeeffectivefieldtheory
AT pranaamravi protonprotonfusioninlatticeeffectivefieldtheory