Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region
Abstract We present the first determination of the topological susceptibility from lattice QCD in the presence of strong background magnetic fields. Our simulations employ 2+1 flavours of stout-improved staggered quarks with physical masses and cover a broad range of temperatures and magnetic field...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)228 |
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| author | B. B. Brandt G. Endrődi J. J. Hernández Hernández G. Markó |
| author_facet | B. B. Brandt G. Endrődi J. J. Hernández Hernández G. Markó |
| author_sort | B. B. Brandt |
| collection | DOAJ |
| description | Abstract We present the first determination of the topological susceptibility from lattice QCD in the presence of strong background magnetic fields. Our simulations employ 2+1 flavours of stout-improved staggered quarks with physical masses and cover a broad range of temperatures and magnetic field values. The results are extrapolated to the continuum limit using four different lattice spacings and an eigenvalue reweighting technique to reduce discretisation errors. For low temperatures, our calculations show an enhancement of the topological susceptibility due to the magnetic field, compatible with predictions from chiral perturbation theory. At high temperatures, we observe the impact of inverse magnetic catalysis on the susceptibility. |
| format | Article |
| id | doaj-art-1a3c0b2e5a674062bb6ea26ba445af74 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-1a3c0b2e5a674062bb6ea26ba445af742025-01-05T12:05:45ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241212110.1007/JHEP12(2024)228Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover regionB. B. Brandt0G. Endrődi1J. J. Hernández Hernández2G. Markó3Universität BielefeldUniversität BielefeldUniversität BielefeldUniversität BielefeldAbstract We present the first determination of the topological susceptibility from lattice QCD in the presence of strong background magnetic fields. Our simulations employ 2+1 flavours of stout-improved staggered quarks with physical masses and cover a broad range of temperatures and magnetic field values. The results are extrapolated to the continuum limit using four different lattice spacings and an eigenvalue reweighting technique to reduce discretisation errors. For low temperatures, our calculations show an enhancement of the topological susceptibility due to the magnetic field, compatible with predictions from chiral perturbation theory. At high temperatures, we observe the impact of inverse magnetic catalysis on the susceptibility.https://doi.org/10.1007/JHEP12(2024)228Lattice QCDLattice Quantum Field TheoryNon-Zero Temperature and DensityVacuum Structure and Confinement |
| spellingShingle | B. B. Brandt G. Endrődi J. J. Hernández Hernández G. Markó Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region Journal of High Energy Physics Lattice QCD Lattice Quantum Field Theory Non-Zero Temperature and Density Vacuum Structure and Confinement |
| title | Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region |
| title_full | Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region |
| title_fullStr | Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region |
| title_full_unstemmed | Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region |
| title_short | Impact of extreme magnetic fields on the QCD topological susceptibility in the vicinity of the crossover region |
| title_sort | impact of extreme magnetic fields on the qcd topological susceptibility in the vicinity of the crossover region |
| topic | Lattice QCD Lattice Quantum Field Theory Non-Zero Temperature and Density Vacuum Structure and Confinement |
| url | https://doi.org/10.1007/JHEP12(2024)228 |
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